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Sorkin N, Zadok R, Giacomo S, Kan-Tor Y, Benjamini Y, Levinger E, Bardugo J, Abulafia A. Comparison of IOL Power Prediction Accuracy between Two Swept-Source OCT Biometry Devices. Am J Ophthalmol 2024:S0002-9394(24)00160-0. [PMID: 38643892 DOI: 10.1016/j.ajo.2024.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 04/14/2024] [Accepted: 04/14/2024] [Indexed: 04/23/2024]
Abstract
PURPOSE To compare intraocular lens (IOL) power prediction accuracy of the Eyestar 900 (EyeS900) and the IOLMaster 700 (IOLM700) based on estimated and measured posterior corneal power DESIGN: Retrospective, inter-instrument reliability study METHODS: Setting: Institutional. PARTICIPANTS 225 eyes of 225 cataract surgery patients. MEASUREMENTS Patients underwent measurements by both devices preoperatively. MAIN OUTCOME MEASURES Spherical Equivalent Prediction Error (SEQ-PE), spread of the SEQ-PE (Precision) and the absolute SEQ-PE (accuracy) of each device using Barrett Universal II (BUII) formula with either estimated posterior keratometry (E-PK) or measured posterior keratometry (M-PK). RESULTS Trimmed mean SEQ-PEs of EyeS900 E-PK, EyeS900 M-PK, IOLM700 E-PK and IOLM700 M-PK were 0.03, 0.08, 0.02 and 0.08 D, respectively with no significant differences between EyeS900 E-PK and IOLM700 E-PK (p=0.31) as well as between EyeS900 M-PK and IOLM700 M-PK (p=0.31). Statistically significant SEQ-PE differences were found when E-PK and M-PK were compared, regardless of the device used, showing hyperopic SEQ-PE in M-PK calculations. Excellent correlation and agreement in SEQ-PE were found between the devices for both E-PK (p<0.001,r=0.848, mean bias:+0.01 D, 95% LOA of -0.32 to +0.34 D) and M-PK (p<0.001,r=0.776, mean bias:-0.01 D, 95% LOA of -0.42 to +0.39 D). No significant differences were found comparing absolute SEQ-PE and precision of the devices. CONCLUSION The Eyestar 900 and the IOLMaster 700 show comparable IOL power prediction accuracy by the BUII formula using either estimated or measured posterior keratometry. An adjusted lens factor may be required for BUII when utilizing measured posterior keratometry in both devices.
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Affiliation(s)
- Nir Sorkin
- Department of Ophthalmology, Tel Aviv Medical Center, Tel Aviv, Israel; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Rotem Zadok
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | - Yoav Kan-Tor
- The Alexander Grass Center for Bioengineering, School of Computer Science and Engineering, Hebrew University of Jerusalem, Israel
| | - Yuval Benjamini
- Department of Statistics and Data Science, The Hebrew University of Jerusalem, Israel
| | - Eliya Levinger
- Department of Ophthalmology, Tel Aviv Medical Center, Tel Aviv, Israel; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Judith Bardugo
- Department of Ophthalmology, Shaare Zedek Medical Center and the Hebrew University-Hadassah Medical School, Jerusalem, Israel
| | - Adi Abulafia
- Department of Ophthalmology, Shaare Zedek Medical Center and the Hebrew University-Hadassah Medical School, Jerusalem, Israel
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Sun C, Fu C, Cato K. Characterizing nursing time with patients using computer vision. J Nurs Scholarsh 2024. [PMID: 38615340 DOI: 10.1111/jnu.12971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 03/20/2024] [Accepted: 04/03/2024] [Indexed: 04/16/2024]
Abstract
BACKGROUND Compared to other providers, nurses spend more time with patients, but the exact quantity and nature of those interactions remain largely unknown. The purpose of this study was to characterize the interactions of nurses at the bedside using continuous surveillance over a year long period. METHODS Nurses' time and activity at the bedside were characterized using a device that integrates the use of obfuscated computer vision in combination with a Bluetooth beacon on the nurses' identification badge to track nurses' activities at the bedside. The surveillance device (AUGi) was installed over 37 patient beds in two medical/surgical units in a major urban hospital. Forty-nine nurse users were tracked using the beacon. Data were collected 4/15/19-3/15/20. Statistics were performed to describe nurses' time and activity at the bedside. RESULTS A total of n = 408,588 interactions were analyzed over 670 shifts, with >1.5 times more interactions during day shifts (n = 247,273) compared to night shifts (n = 161,315); the mean interaction time was 3.34 s longer during nights than days (p < 0.0001). Each nurse had an average of 7.86 (standard deviation [SD] = 10.13) interactions per bed each shift and a mean total interaction time per bed of 9.39 min (SD = 14.16). On average, nurses covered 7.43 beds (SD = 4.03) per shift (day: mean = 7.80 beds/nurse/shift, SD = 3.87; night: mean = 7.07/nurse/shift, SD = 4.17). The mean time per hourly rounding (HR) was 69.5 s (SD = 98.07) and 50.1 s (SD = 56.58) for bedside shift report. DISCUSSION As far as we are aware, this is the first study to provide continuous surveillance of nurse activities at the bedside over a year long period, 24 h/day, 7 days/week. We detected that nurses spend less than 1 min giving report at the bedside, and this is only completed 20.7% of the time. Additionally, hourly rounding was completed only 52.9% of the time and nurses spent only 9 min total with each patient per shift. Further study is needed to detect whether there is an optimal timing or duration of interactions to improve patient outcomes. CLINICAL RELEVANCE Nursing time with the patient has been shown to improve patient outcomes but precise information about how much time nurses spend with patients has been heretofore unknown. By understanding minute-by-minute activities at the bedside over a full year, we provide a full picture of nursing activity; this can be used in the future to determine how these activities affect patient outcomes.
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Affiliation(s)
- Carolyn Sun
- Hunter College and Columbia University, New York, New York, USA
| | - Caroline Fu
- NYC Administration for Children's Services, New York, New York, USA
| | - Kenrick Cato
- Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Mazzone E, Kadji C, Cannie MM, Badr DA, Jani JC. Prediction of large-for-gestational age at 36 weeks' gestation: two-dimensional ultrasound vs three-dimensional ultrasound vs magnetic resonance imaging. Ultrasound Obstet Gynecol 2024; 63:489-496. [PMID: 37725758 DOI: 10.1002/uog.27485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/05/2023] [Accepted: 09/08/2023] [Indexed: 09/21/2023]
Abstract
OBJECTIVE To compare the performance of two-dimensional ultrasound (2D-US), three-dimensional ultrasound (3D-US) and magnetic resonance imaging (MRI) at 36 weeks' gestation in predicting the delivery of a large-for-gestational-age (LGA) neonate, defined as birth weight ≥ 95th percentile, in patients at high and low risk for macrosomia. METHODS This was a secondary analysis of a prospective observational study conducted between January 2017 and February 2019. Women with a singleton pregnancy at 36 weeks' gestation underwent 2D-US, 3D-US and MRI within 15 min for estimation of fetal weight. Weight estimations and birth weight were plotted on a growth curve to obtain percentiles for comparison. Participants were considered high risk if they had at least one of the following risk factors: diabetes mellitus, estimated fetal weight ≥ 90th percentile at the routine third-trimester ultrasound examination, obesity (prepregnancy body mass index ≥ 30 kg/m2) or excessive weight gain during pregnancy. The outcome was the diagnostic performance of each modality in the prediction of birth weight ≥ 95th percentile, expressed as the area under the receiver-operating-characteristics curve (AUC), sensitivity, specificity and positive and negative predictive values. RESULTS A total of 965 women were included, of whom 533 (55.23%) were high risk and 432 (44.77%) were low risk. In the low-risk group, the AUCs for birth weight ≥ 95th percentile were 0.982 for MRI, 0.964 for 2D-US and 0.962 for 3D-US; pairwise comparisons were non-significant. In the high-risk group, the AUCs were 0.959 for MRI, 0.909 for 2D-US and 0.894 for 3D-US. A statistically significant difference was noted between MRI and both 2D-US (P = 0.002) and 3D-US (P = 0.002), but not between 2D-US and 3D-US (P = 0.503). In the high-risk group, MRI had the highest sensitivity (65.79%) compared with 2D-US (36.84%, P = 0.002) and 3D-US (21.05%, P < 0.001), whereas 3D-US had the highest specificity (98.99%) compared with 2D-US (96.77%, P = 0.005) and MRI (96.97%, P = 0.004). CONCLUSIONS At 36 weeks' gestation, MRI has better performance compared with 2D-US and 3D-US in predicting birth weight ≥ 95th percentile in patients at high risk for macrosomia, whereas the performance of 2D-US and 3D-US is comparable. For low-risk patients, the three modalities perform similarly. © 2023 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- E Mazzone
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - C Kadji
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - M M Cannie
- Department of Radiology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
- Department of Radiology, UZ Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - D A Badr
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - J C Jani
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
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Lamon S, de Dumast P, Sanchez T, Dunet V, Pomar L, Vial Y, Koob M, Bach Cuadra M. Assessment of fetal corpus callosum biometry by 3D super-resolution reconstructed T2-weighted magnetic resonance imaging. Front Neurol 2024; 15:1358741. [PMID: 38595845 PMCID: PMC11002102 DOI: 10.3389/fneur.2024.1358741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 03/08/2024] [Indexed: 04/11/2024] Open
Abstract
Objective To assess the accuracy of corpus callosum (CC) biometry, including sub-segments, using 3D super-resolution fetal brain MRI (SR) compared to 2D or 3D ultrasound (US) and clinical low-resolution T2-weighted MRI (T2WS). Method Fetal brain biometry was conducted by two observers on 57 subjects [21-35 weeks of gestational age (GA)], including 11 cases of partial CC agenesis. Measures were performed by a junior observer (obs1) on US, T2WS and SR and by a senior neuroradiologist (obs2) on T2WS and SR. CC biometric regression with GA was established. Statistical analysis assessed agreement within and between modalities and observers. Results This study shows robust SR to US concordance across gestation, surpassing T2WS. In obs1, SR aligns with US, except for genu and CC length (CCL), enhancing splenium visibility. In obs2, SR closely corresponds to US, differing in rostrum and CCL. The anterior CC (rostrum and genu) exhibits higher variability. SR's regression aligns better with literature (US) for CCL, splenium and body than T2WS. SR is the method with the least missing values. Conclusion SR yields CC biometry akin to US (excluding anterior CC). Thanks to superior 3D visualization and better through plane spatial resolution, SR allows to perform CC biometry more frequently than T2WS.
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Affiliation(s)
- Samuel Lamon
- Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- CIBM Center for Biomedical Imaging, Lausanne, Switzerland
- Ultrasound and Fetal Medicine, Department Woman-Mother-Child, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland
| | - Priscille de Dumast
- Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- CIBM Center for Biomedical Imaging, Lausanne, Switzerland
| | - Thomas Sanchez
- Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- CIBM Center for Biomedical Imaging, Lausanne, Switzerland
| | - Vincent Dunet
- Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Léo Pomar
- Ultrasound and Fetal Medicine, Department Woman-Mother-Child, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland
- School of Health Sciences (HESAV), University of Applied Sciences and Arts Western Switzerland, Lausanne, Switzerland
| | - Yvan Vial
- Ultrasound and Fetal Medicine, Department Woman-Mother-Child, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland
| | - Mériam Koob
- Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Meritxell Bach Cuadra
- Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- CIBM Center for Biomedical Imaging, Lausanne, Switzerland
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Lunardhi A, Huynh K, Lee D, Pickering TA, Galyon KD, Stohl HE. Accuracy of Estimated Fetal Weight by Ultrasound Versus Leopold Maneuver. Ultrasound Q 2024; 40:87-92. [PMID: 37851969 PMCID: PMC10922333 DOI: 10.1097/ruq.0000000000000670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
ABSTRACT Estimated fetal weight (EFW) is frequently used for clinical decision-making in obstetrics. The goals of this study were to determine the accuracy of EFW assessments by Leopold and ultrasound and to investigate any associations with maternal characteristics. Postgraduate years 1 and 2 obstetrics and gynecology resident physicians from Harbor-UCLA Medical Center from 2014 to 2020 performed EFW assessments on 10 preterm (<37 weeks' gestational age) fetuses by ultrasound biometry and 10 full-term (≥37 weeks' gestational age) fetuses by ultrasound biometry and Leopold maneuver. Assessments were included if the patients delivered within 2 weeks of the assessments. One thousand six hundred ninety-seven EFW assessments on 1183 patients performed by 33 residents were analyzed; 72.6% of sonographic full-term EFWs, 69% of Leopold full-term EFWs, and 61.5% of sonographic preterm EFWs were within 10% of the neonatal birth weight (BW). The lowest estimation error in our study occurred when actual BW was 3600 to 3700 g. After adjusting for BW, residents were found to have lower accuracy when the mother had a higher body mass index (BMI) for full-term estimation methods (Leopold and ultrasound, β = 0.13 and 0.12, P = 0.001 and 0.002, respectively). Maternal BMI was not related to estimation error for preterm fetuses ( β = 0.01, P = 0.75). Clinical and sonographic EFW assessments performed by obstetrics and gynecology junior residents are within 10% of neonatal BW much of the time. In our cohort, they tended to overestimate EFWs of lower-BW infants and underestimate EFWs of higher-BW infants. Accuracy of full-term EFW assessments seems to decrease with increasing maternal BMI.
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Affiliation(s)
- Alicia Lunardhi
- Department of Obstetrics and Gynecology, Harbor-UCLA Medical Center, Torrance, CA 90502
| | - Kimberly Huynh
- Department of Obstetrics and Gynecology, Harbor-UCLA Medical Center, Torrance, CA 90502
| | - Derek Lee
- Division of Maternal Fetal Medicine, Department of OB/GYN at Albany Medical Center, Albany, NY 12208
| | - Trevor A. Pickering
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033
| | - Kristina D. Galyon
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Harbor-UCLA Medical Center, David Geffen School of Medicine at UCLA, Torrance, CA 90502
| | - Hindi E. Stohl
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Harbor-UCLA Medical Center, David Geffen School of Medicine at UCLA, Torrance, CA 90502
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Bekele D, Gudu W, Wondafrash M, Abdosh AA, Sium AF. Utilization of third-trimester fetal transcerebellar diameter measurement for gestational age estimation: a comparative study using Bland-Altman analysis. AJOG Glob Rep 2024; 4:100307. [PMID: 38304306 PMCID: PMC10832473 DOI: 10.1016/j.xagr.2024.100307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024] Open
Abstract
BACKGROUND Several studies show that gestational age estimation during the third trimester of pregnancy using fetal transcerebellar diameter is superior to that measured using fetal biometry (biparietal diameter, head circumference, abdominal circumference, and femur diaphysis length). However, the conclusion of the studies stemmed from findings of correlation and regression statistical tests, which are not the recommended statistical analysis methods for comparing the values of 1 variable as measured by 2 different methods. OBJECTIVE This study aimed to compare the accuracy of gestational age estimation using transcerebellar diameter to that using fetal biometry during the third trimester of pregnancy using Bland-Altman statistical analysis. STUDY DESIGN This was a cross-sectional study on pregnant women who presented for routine antenatal care follow-up in the third trimester of pregnancy (28-41 weeks of gestation) at St. Paul's Hospital Millennium Medical College (Ethiopia) between November 1, 2020, and February 28, 2021. Data were collected prospectively using a structured questionnaire on the Open Data Kit. The primary outcome of our study was the mean bias of gestational age estimation (error in estimating gestational age) using transcerebellar diameter and composite fetal biometry (composite gestational age). Data were analyzed using Stata (version 15; StataCorp, College Station, TX). Simple descriptive analysis, Bland-Altman analysis, and the Kendall τa discordance measurement were performed as appropriate. The mean bias (error) and limits of agreement were used to present the significance of the finding. RESULTS A total of 104 pregnant women in the third trimester were included in the study. The mean error (bias) when transcerebellar diameter was used to estimate the gestational age was 0.65 weeks vs a bias of 1.1 weeks using composite biometry, compared with the gold standard method from crown-lump length (in both cases). The calculated estimated limit of agreement was narrower in the case of transcerebellar diameter than in the case of composite fetal biometry (-3.56 to 2.25 vs -4.73 to 2.53). The Kendall τa discordance measurement revealed that gestational age estimations using composite biometry and crown-lump length were 51% to 70%, respectively, more likely to agree than disagree and that gestational age estimations using transcerebellar diameter and crown-lump length were 62% to 77%, respectively, more likely to agree than to disagree (P≤.001). CONCLUSION Gestational age estimation using transcerebellar diameter is more accurate than gestational age estimation using composite gestational age (biparietal diameter, head circumference, femur diaphysis length, and abdominal circumference). Transcerebellar diameter should be used to date third-trimester pregnancies with unknown gestational age (unknown last normal menstrual period with no early ultrasound milestone).
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Affiliation(s)
- Delayehu Bekele
- Department of Obstetrics and Gynecology, St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia (Drs Bekele, Gudu, Abdosh, and Sium)
| | - Wondimu Gudu
- Department of Obstetrics and Gynecology, St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia (Drs Bekele, Gudu, Abdosh, and Sium)
| | - Mekitie Wondafrash
- St. Paul's Institute for Reproductive Health and Rights, Addis Ababa, Ethiopia (Dr Wondafrash)
| | - Abdulfetah Abdulkadir Abdosh
- Department of Obstetrics and Gynecology, St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia (Drs Bekele, Gudu, Abdosh, and Sium)
| | - Abraham Fessehaye Sium
- Department of Obstetrics and Gynecology, St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia (Drs Bekele, Gudu, Abdosh, and Sium)
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Schlatter A, Palkovits S, Ruiss M, Fisus AD, Hirnschall N, Schmidl D, Garhöfer G, Findl O. Repeatability of biometry in patients with meibomian gland dysfunction before and after vectored thermal pulsation therapy: A randomized, controlled trial. Acta Ophthalmol 2024; 102:e60-e68. [PMID: 37203877 DOI: 10.1111/aos.15711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 04/23/2023] [Accepted: 05/05/2023] [Indexed: 05/20/2023]
Abstract
PURPOSE To evaluate the effect of vectored thermal pulsation therapy (VTPT) on the repeatability of biometry readings of two different optical biometers in patients with meibomian gland dysfunction (MGD). METHODS Patients affected by MGD were included in this prospective, randomized, controlled, investigator-masked study. One eye was randomized to VTPT (LipiFlow®, Johnson & Johnson), and the contralateral eye served as a control. Three visits were scheduled at baseline, 2 weeks and 3 months after the treatment. The main outcome parameter of the study was the repeatability of three calculations of emmetropic intraocular lens power (EIOLP) at the 3 months visit as compared to baseline using an optical biometer (IOLMaster® 700, Carl Zeiss Meditec AG). Repeatability of different keratometry values obtained by the optical biometer and a Placido-disc topographer (MS-39®, CSO) served as secondary outcome parameters. RESULTS Twenty-nine patients were included in the final analysis. While tear film parameters improved in the study eyes, there were no significant differences regarding the repeatability of three EIOLP measurements between baseline and 3-months-visit in both eyes (p > 0.05) and keratometry measurements in both the optical biometer and the Placido-disc topographer. Remarkably, throughout all study visits, there were some outliers regarding the repeatability of measurements. CONCLUSION While both devices showed high repeatability regarding EIOLP and keratometry, future studies are needed to detect high-risk patients for poor repeatability.
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Affiliation(s)
- Andreas Schlatter
- VIROS - Vienna Institute for Research in Ocular Surgery, Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Stefan Palkovits
- VIROS - Vienna Institute for Research in Ocular Surgery, Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria
| | - Manuel Ruiss
- VIROS - Vienna Institute for Research in Ocular Surgery, Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria
| | - Andreea-Dana Fisus
- VIROS - Vienna Institute for Research in Ocular Surgery, Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria
| | - Nino Hirnschall
- Department of Ophthalmology and Optometry, Kepler University Hospital GmbH, Linz, Austria
- Johannes Kepler University Linz, Medical Faculty, Linz, Austria
| | - Doreen Schmidl
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Gerhard Garhöfer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Oliver Findl
- VIROS - Vienna Institute for Research in Ocular Surgery, Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria
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Rombold F, Niederdellmann C, Pariti R, Khayat B. Time Savings Using a Digital Workflow versus a Conventional for Intraocular Lens Implantation in a Corporate Chain Hospital Setting. Clin Ophthalmol 2024; 18:113-119. [PMID: 38226000 PMCID: PMC10789570 DOI: 10.2147/opth.s439930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 12/15/2023] [Indexed: 01/17/2024] Open
Abstract
Purpose To evaluate and compare the digital cataract workflow with the existing conventional workflow in terms of time savings for overall diagnostic procedures from preoperative measurements, data transfer, intraocular lens (IOL) power calculation, and axis marking for cataract surgery in a corporate hospital chain setting. Patients and Methods This prospective non-clinical study assessed the mean procedural times for preoperative assessments, calculation of IOL power, data transfer to operating devices, and total surgery for both digital and existing conventional workflows. Results Overall, 430 workflows (digital cataract workflow: 227; existing conventional workflow: 203) were included for time measurements. The digital cataract workflow resulted in shorter mean (± standard deviation [SD]) preoperative assessments with lesser variability among individual assessments than the existing workflow (14.15 ± 1.86 vs 21.41 ± 1.18 min, respectively); with a time saving of 35%. Similarly, the mean (± SD) time required for the subsequent assessment steps such as IOL calculation (2.19 ± 1.23 vs 3.17± 2.29 min; 30%), data transfer (0 vs 1.33 ± 0.25 min; 100%), IOL axis marking and alignment (0 vs 3.07 ± 0.53 min; 100%) were shorter with digital cataract workflow versus existing conventional cataract workflow. Briefly, the overall mean time from preoperative assessments to final surgery was 16.48 min with digital cataract workflow and 30.58 min with existing conventional workflow; resulting in a time saving of 46%. Conclusion The Zeiss digital cataract workflow demonstrated greater time savings at each step of the cataract surgery workflow compared to the existing conventional workflow. In addition, digitalization can lead to a more streamlined cataract surgery workflow that is more convenient and cost-effective than the existing conventional practices in a corporate chain hospital setting.
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Viswanathan AV, Pokaprakarn T, Kasaro MP, Shah HR, Prieto JC, Benabdelkader C, Sebastião YV, Sindano N, Stringer E, Stringer JSA. Deep learning to estimate gestational age from fly-to cineloop videos: A novel approach to ultrasound quality control. Int J Gynaecol Obstet 2024. [PMID: 38189177 DOI: 10.1002/ijgo.15321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 12/05/2023] [Accepted: 12/10/2023] [Indexed: 01/09/2024]
Abstract
OBJECTIVE Low-cost devices have made obstetric sonography possible in settings where it was previously unfeasible, but ensuring quality and consistency at scale remains a challenge. In the present study, we sought to create a tool to reduce substandard fetal biometry measurement while minimizing care disruption. METHODS We developed a deep learning artificial intelligence (AI) model to estimate gestational age (GA) in the second and third trimester from fly-to cineloops-brief videos acquired during routine ultrasound biometry-and evaluated its performance in comparison to expert sonographer measurement. We then introduced random error into fetal biometry measurements and analyzed the ability of the AI model to flag grossly inaccurate measurements such as those that might be obtained by a novice. RESULTS The mean absolute error (MAE) of our model (±standard error) was 3.87 ± 0.07 days, compared to 4.80 ± 0.10 days for expert biometry (difference -0.92 days; 95% CI: -1.10 to -0.76). Based on simulated novice biometry with average absolute error of 7.5%, our model reliably detected cases where novice biometry differed from expert biometry by 10 days or more, with an area under the receiver operating characteristics curve of 0.93 (95% CI: 0.92, 0.95), sensitivity of 81.0% (95% CI: 77.9, 83.8), and specificity of 89.9% (95% CI: 88.1, 91.5). These results held across a range of sensitivity analyses, including where the model was provided suboptimal truncated fly-to cineloops. CONCLUSIONS Our AI model estimated GA more accurately than expert biometry. Because fly-to cineloop videos can be obtained without any change to sonographer workflow, the model represents a no-cost guardrail that could be incorporated into both low-cost and commercial ultrasound devices to prevent reporting of most gross GA estimation errors.
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Affiliation(s)
- Ambika V Viswanathan
- Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Teeranan Pokaprakarn
- Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
- Department of Biostatistics, University of North Carolina Gillings School of Global Public Health, Chapel Hill, North Carolina, USA
| | - Margaret P Kasaro
- Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
- UNC Global Projects - Zambia LLC, Lusaka, Zambia
| | - Hina R Shah
- Department of Psychiatry, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Juan C Prieto
- Department of Psychiatry, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Chiraz Benabdelkader
- Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Yuri V Sebastião
- Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | | | - Elizabeth Stringer
- Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
- UNC Global Projects - Zambia LLC, Lusaka, Zambia
| | - Jeffrey S A Stringer
- Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
- UNC Global Projects - Zambia LLC, Lusaka, Zambia
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Gupta SK, Dhakal R, Verkicharla PK. Biometry-Based Technique for Determining the Anterior Scleral Thickness: Validation Using Optical Coherence Tomography Landmarks. Transl Vis Sci Technol 2024; 13:25. [PMID: 38285460 PMCID: PMC10829803 DOI: 10.1167/tvst.13.1.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 12/22/2023] [Indexed: 01/30/2024] Open
Abstract
Purpose Considering the potential role of anterior scleral thickness (AST) in myopia and the ubiquitous use of optical biometers, we applied and validated a biometry-based technique for estimating AST using optical coherence tomography (OCT) landmarks. Methods The AST was determined across four meridians in 62 participants (aged 20-37 years) with a swept-source OCT and a noncontact optical biometer at a mean ± SD distance of 3.13 ± 0.88 mm from the limbus. The biometer's graticule was focused and aligned with the anterior scleral reflex, which led to the generation of four prominent A-scan peaks: P1 (anterior bulbar conjunctiva), P2 (anterior episclera), P3 (anterior margin of anterior sclera), and P4 (posterior margin of anterior sclera), which were analyzed and compared with the corresponding OCT landmarks to determine tissue thickness. Results The AST measurements between biometer and OCT correlated for all meridians (r ≥ 0.70, overall r = 0.82; coefficient of variation [CV], 9%-12%; P < 0.01). The mean difference ± SD between two instruments for overall AST measures was 3 ± 2.8 µm (range, -18 to +16 µm; lower limits of agreement, -89 to +83 µm; P = 0.23) across all meridians. The mean ± SE AST with both instruments was found to be thickest at the inferior (562 ± 7 µm and 578 ± 7 µm) and thinnest at the superior (451 ± 7 µm and 433 ± 6 µm) meridian. The biometer demonstrated good intrasession (CV, 8.4%-9.6%) and intersession (CV, 7.9%-13.3%) repeatability for AST measurements across all meridians. Conclusions The noncontact optical biometer, which is typically used to determine axial length, is capable of accurately estimating AST based on OCT landmarks. Translational Relevance The high-resolution optical biometers can demonstrate wider application in the field of myopia research and practice to determine AST.
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Affiliation(s)
- Satish Kumar Gupta
- Myopia Research Lab, Prof. Brien Holden Eye Research Centre, Brien Holden Institute of Optometry and Vision Sciences, L V Prasad Eye Institute, Hyderabad, India
| | - Rohit Dhakal
- Myopia Research Lab, Prof. Brien Holden Eye Research Centre, Brien Holden Institute of Optometry and Vision Sciences, L V Prasad Eye Institute, Hyderabad, India
- The INFOR Myopia Centre, L V Prasad Eye Institute, Hyderabad, India
| | - Pavan Kumar Verkicharla
- Myopia Research Lab, Prof. Brien Holden Eye Research Centre, Brien Holden Institute of Optometry and Vision Sciences, L V Prasad Eye Institute, Hyderabad, India
- The INFOR Myopia Centre, L V Prasad Eye Institute, Hyderabad, India
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Sakthivel S, Maria Francis Y, G SN, K V SD, Dhakshnamoorthy N. Anthropometric Analysis of Cuboid Bones in a South Indian Population. Cureus 2024; 16:e51622. [PMID: 38313952 PMCID: PMC10837486 DOI: 10.7759/cureus.51622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2024] [Indexed: 02/06/2024] Open
Abstract
Purpose Cuboid bone and its fibromuscular supports maintain the lateral longitudinal arch in weight transmission during different gait cycle phases. Morphometry of the cuboid bone is essential for designing a cuboid prosthesis for foot reconstruction and establishing an individual's biological profile. The present study aims to assess the morphology and morphometry of the cuboid bone. Materials and methods The study used 103 cuboid bones (right 50, left 53) of unknown sex. Different shapes of cuboid articular facets were observed, and the morphometric parameters such as length, breadth, and height of cuboid, and the dimensions of articular facets in cuboid (calcaneal facet, fourth and fifth metatarsal facets, ecto-cuneiform facet, navicular facet, and facet for os peroneum) were analyzed. Results The mean length, breadth, and height of the cuboid bone were 33.69 ± 2.61 mm, 25.43 ± 2.87 mm, and 23.03 ± 2.43 mm, respectively. The mean transverse and vertical diameters were 23.22 ± 2.4 mm and 15.97 ± 1.85 mm, respectively. Facet for os peroneum was observed in 74.76% and for navicular bone in 26.2%. The mean transverse and vertical diameters were 7.16 ± 2.08 and 6.78 ± 1.78 mm, respectively. The depth of the peroneal groove was 4.30 ± 1.11 mm. Conclusion The morphometric data from the present study could assist in preoperative planning and designing of prostheses for foot reconstruction, and in establishing the biological profile of an individual, which can help the anthropologists in identifying the unknown remains.
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Affiliation(s)
- Sulochana Sakthivel
- Anatomy, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, IND
| | | | - Sankara N G
- Anatomy, Saveetha Medical College and Hospital, Chennai, IND
| | - Sarala D K V
- Anatomy, Employees' State Insurance Company Medical College and Hospital, Chennai, IND
| | - Nithya Dhakshnamoorthy
- Anatomy, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, IND
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Rosenberg MA. Deep Learning and Biased Prediction: More Questions Than Answers? Circ Heart Fail 2024; 17:e011368. [PMID: 38126237 PMCID: PMC10842806 DOI: 10.1161/circheartfailure.123.011368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Affiliation(s)
- Michael A Rosenberg
- Division of Cardiology, Cardiac Electrophysiology Section and Department of Biomedical Informatics, University of Colorado Anschutz Medical Campus, Aurora
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13
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Green RW, Fischerová D, Testa AC, Franchi D, Frühauf F, Lindqvist PG, di Legge A, Cibula D, Fruscio R, Haak LA, Opolskiene G, Vidal Urbinati AM, Timmerman D, Bourne T, van den Bosch T, Epstein E. Sonographic, Demographic, and Clinical Characteristics of Pre- and Postmenopausal Women with Endometrial Cancer; Results from a Post Hoc Analysis of the IETA4 (International Endometrial Tumor Analysis) Multicenter Cohort. Diagnostics (Basel) 2023; 14:1. [PMID: 38201310 PMCID: PMC10802150 DOI: 10.3390/diagnostics14010001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/01/2023] [Accepted: 12/10/2023] [Indexed: 01/12/2024] Open
Abstract
In this study, we conducted a comparative analysis of demographic, histopathological, and sonographic characteristics between pre- and postmenopausal women diagnosed with endometrial cancer, while also examining sonographic and anthropometric features in 'low' and 'intermediate/high-risk' cases, stratified by menopausal status. Our analysis, based on data from the International Endometrial Tumor Analysis (IETA) 4 cohort comprising 1538 women (161 premenopausal, 1377 postmenopausal) with biopsy-confirmed endometrial cancer, revealed that premenopausal women, compared to their postmenopausal counterparts, exhibited lower parity (median 1, IQR 0-2 vs. 1, IQR 1-2, p = 0.001), a higher family history of colon cancer (16% vs. 7%, p = 0.001), and smaller waist circumferences (median 92 cm, IQR 82-108 cm vs. 98 cm, IQR 87-112 cm, p = 0.002). Premenopausal women more often had a regular endometrial-myometrial border (39% vs. 23%, p < 0.001), a visible endometrial midline (23% vs. 11%, p < 0.001), and undefined tumor (73% vs. 84%, p = 0.001). Notably, despite experiencing a longer duration of abnormal uterine bleeding (median 5 months, IQR 3-12 vs. 3 months, 2-6, p < 0.001), premenopausal women more often had 'low' risk disease (78% vs. 46%, p < 0.001). Among sonographic and anthropometric features, only an irregular endometrial-myometrial border was associated with 'intermediate/high' risk in premenopausal women. Conversely, in postmenopausal women, multiple features correlated with 'intermediate/high' risk disease. Our findings emphasize the importance of considering menopausal status when evaluating sonographic features in women with endometrial cancer.
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Affiliation(s)
- Rasmus W. Green
- Department of Clinical Science and Education, Karolinska Institute, Södersjukhuset, Sjukhusbacken 10, 118 83 Stockholm, Sweden; (P.G.L.)
| | - Daniela Fischerová
- Department of Gynaecology, Obstetrics and Neonatology, General University Hospital and First Faculty of Medicine, Charles University, Apolinářská 18, 128 51 Prague, Czech Republic; (D.F.); (F.F.); (D.C.)
| | - Antonia C. Testa
- Department of Women and Child Health, Division of Gynecologic Oncology, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy;
- Department of Life Science and Public Health, Catholic University of Sacred Heart Largo Agostino Gemelli, 00168 Rome, Italy
| | - Dorella Franchi
- Department of Gynecological Oncology, European Institute of Oncology (IEO) IRCCS, 20141 Milan, Italy; (D.F.); (A.M.V.U.)
| | - Filip Frühauf
- Department of Gynaecology, Obstetrics and Neonatology, General University Hospital and First Faculty of Medicine, Charles University, Apolinářská 18, 128 51 Prague, Czech Republic; (D.F.); (F.F.); (D.C.)
| | - Pelle G. Lindqvist
- Department of Clinical Science and Education, Karolinska Institute, Södersjukhuset, Sjukhusbacken 10, 118 83 Stockholm, Sweden; (P.G.L.)
- Department of Obstetrics and Gynecology, Södersjukhuset, 118 83 Stockholm, Sweden
| | - Alessia di Legge
- Department of Obstetrics and Gynecology, Catholic University of the Sacred Heart, 00168 Rome, Italy;
| | - David Cibula
- Department of Gynaecology, Obstetrics and Neonatology, General University Hospital and First Faculty of Medicine, Charles University, Apolinářská 18, 128 51 Prague, Czech Republic; (D.F.); (F.F.); (D.C.)
| | - Robert Fruscio
- UO Gynecology, Department of Medicine and Surgery, IRCCS San Gerardo, University of Milan Bicocca, 20126 Milan, Italy;
| | - Lucia A. Haak
- Institute for the Care of Mother and Child, Prague and Third Faculty of Medicine, Charles University, 147 00 Prague, Czech Republic
| | - Gina Opolskiene
- Center of Obstetrics and Gynecology, Faculty of Medicine, Vilnius University Hospital, 08661 Vilnius, Lithuania;
| | - Ailyn M. Vidal Urbinati
- Department of Gynecological Oncology, European Institute of Oncology (IEO) IRCCS, 20141 Milan, Italy; (D.F.); (A.M.V.U.)
| | - Dirk Timmerman
- Department of Development and Regeneration, KU Leuven, 3000 Leuven, Belgium; (D.T.); (T.v.d.B.)
- Department of Obstetrics and Gynecology, University Hospital Leuven, 3000 Leuven, Belgium
| | - Tom Bourne
- Department of Development and Regeneration, KU Leuven, 3000 Leuven, Belgium; (D.T.); (T.v.d.B.)
- Department of Obstetrics and Gyneacology, Queen Charlotte’s and Chelsea Hospital, Imperial College London, London W12 0HS, UK
| | - Thierry van den Bosch
- Department of Development and Regeneration, KU Leuven, 3000 Leuven, Belgium; (D.T.); (T.v.d.B.)
- Department of Obstetrics and Gynecology, University Hospital Leuven, 3000 Leuven, Belgium
| | - Elisabeth Epstein
- Department of Clinical Science and Education, Karolinska Institute, Södersjukhuset, Sjukhusbacken 10, 118 83 Stockholm, Sweden; (P.G.L.)
- Department of Obstetrics and Gynecology, Södersjukhuset, 118 83 Stockholm, Sweden
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Blehm C, Hall B. Refractive Predictability of a Swept Source Optical Coherence Tomography Biometer in Long and Short Eyes Implanted with Extended Depth of Focus Intraocular Lenses. Clin Ophthalmol 2023; 17:3525-3530. [PMID: 38026607 PMCID: PMC10676102 DOI: 10.2147/opth.s430535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 10/31/2023] [Indexed: 12/01/2023] Open
Abstract
Purpose To determine the refractive predictability of Argos (Movu, a Santec company) measurements and the Barrett Universal II formula in long and short eyes implanted with an extended depth of focus (EDOF) intraocular lens (IOL). Methods This retrospective, non-interventional study included 86 eyes (55 long and 31 short) of 55 patients. Preoperative biometry was performed using the Argos. Preoperative IOL power formulas were the preprogrammed Barrett Universal II (BUII). Data were collected for refractive outcomes, postoperative prediction error (directional and absolute), and monocular corrected distance visual acuity (CDVA, Snellen). Results The mean absolute prediction error for BUII was 0.27 ± 0.26 D overall, 0.24 ± 0.20 D in long eyes, and 0.33 ± 0.33 D in short eyes. Overall, the percentage of eyes with ≤ 0.5 D prediction error was 84% for BUII. In long eyes, the percentage of eyes with ≤ 0.5 D prediction error was 90% for BUII. In short eyes, the percentage of eyes with ≤ 0.5 D prediction error was 74% for BUII. The percentage of eyes with ≤ 0.5 D of MRSE was 89% for long eyes and 94% for short eyes. Visual acuities were excellent in both long and short eyes, with > 90% of eyes 20/25 or better in each group. Conclusion The prediction error of Argos using BUII was low in long and short eyes at one month after EDOF IOL implantation.
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Hashemi H, Heydarian S, Hashemi A, Khabazkhoob M. Axial length and anterior chamber indices in elderly population: Tehran Geriatric Eye Study. Int J Ophthalmol 2023; 16:1876-1882. [PMID: 38028525 PMCID: PMC10626346 DOI: 10.18240/ijo.2023.11.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 08/03/2023] [Indexed: 12/01/2023] Open
Abstract
AIM To determine the normative distribution of axial length (AL), anterior chamber depth (ACD), anterior chamber volume (ACV), anterior chamber angle (ACA), and some of their associated factors in subjects aged 60 and over. METHODS In this cross-sectional study, 160 clusters were sampled using multi-stage cluster sampling in Tehran, Iran. After a preliminary interview, the participants underwent optometric examinations including visual acuity and refraction measurement followed by slit lamp biomicroscopy. Finally, ocular imaging was done using the Pentacam AXL to measure AL, ACD, ACV, and ACA. RESULTS A total of 4519 eyes of 2436 participants were evaluated, of whom 58.0% (n=1412) were female. The mean age of the subjects was 67.32±6.05y (range: 60-95y). The mean AL, ACD, ACV, and ACA was 23.22 mm (23.18-23.27 mm), 2.61 mm (2.59-2.62 mm), 126.56 mm3 (125.08-128.04 mm3), and 30.61° (30.3°-30.92°), respectively. In the multivariable model, after adjusting for the effect of both eyes, the longest and shortest AL was seen in myopic and hyperopic subjects, respectively. AL, ACD, ACV and ACA were significantly larger in men compared to women (P<0.001). Except ACA, other evaluated parameters showed an inverse correlation with age (P<0.001), however, this correlation was insignificant for AL (P=0.623). CONCLUSION Normative value of AL, and other biometric parameters are specific for each ethnicity, age and sex group. Any alteration in these parameters and their effect on refraction should be considered in this age group, especially in case of cataract surgery.
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Affiliation(s)
- Hassan Hashemi
- Noor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, Tehran 1983963113, Iran
| | - Samira Heydarian
- Department of Rehabilitation Science, School of Allied Medical Sciences, Mazandaran University of Medical Sciences, Sari 4815733971, Iran
| | - Alireza Hashemi
- Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran 1983963113, Iran
| | - Mehdi Khabazkhoob
- Department of Basic Sciences, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran 1968653111, Iran
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Aldaba M, Ochando P, Vila-Vidal N, Vinuela-Navarro V, Guisasola L, Perez-Corral J. Precision and agreement of axial length in paediatric population measured with MYAH and AL-Scan biometers. Clin Exp Optom 2023:1-6. [PMID: 37956406 DOI: 10.1080/08164622.2023.2277287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 10/22/2023] [Indexed: 11/15/2023] Open
Abstract
CLINICAL RELEVANCE Measuring axial length is key in the field of myopia development and control. Hence, the precision and agreement of commercially available biometers is of vital interest to understand their variability and interchangeability in the paediatric population. BACKGROUND Different biometers are available to measure axial length and monitor myopia progression in clinical practice. The purpose of this study was to assess the precision (repeatability and reproducibility) and agreement of the MYAH and AL-Scan biometers in a paediatric population. METHODS Three consecutive measurements were performed using MYAH and AL-Scan biometers in each subject by the same operator to test for repeatability. To test for reproducibility, two measurements were performed for each subject by two different observers with a 5-min interval between measurements. To test the agreement, each subject was measured once with each instrument. RESULTS A total of 187 subjects, with a mean age of 8.5 ± 0.3 years and mean spherical equivalent refractive error of +0.22 ± 0.77 D participated in the study. For the repeatability study, the within-subject standard deviation was 0.01 mm, and the repeatability limit was 0.04 mm for both instruments, with no statistically significant differences among repeated measures (p = 0.162 for MYAH and p = 0.774 for AL-Scan). For the reproducibility study, the within-subject standard deviation was 0.01 mm and the repeatability limit was 0.04 mm. There were statistically significant differences for the repeated measures for the AL-Scan (p = 0.002) but not for the MYAH (p = 0.643). Regarding the agreement between both instruments, the 95% limit of agreement ranged from -0.04 to 0.05 mm, and the differences were statistically significant (p = 0.021). CONCLUSIONS The repeatability, reproducibility, and agreement of the MYAH and AL-Scan biometers seem optimal for following children with myopia.
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Affiliation(s)
- Mikel Aldaba
- Center for Sensors, Instruments and Systems Development, Universitat Politècnica de Catalunya, Terrassa, Spain
| | - Pablo Ochando
- Centre Universitari de la Visió, Universitat Politècnica de Catalunya, Terrassa, Spain
| | - Nuria Vila-Vidal
- Centre Universitari de la Visió, Universitat Politècnica de Catalunya, Terrassa, Spain
| | - Valldeflors Vinuela-Navarro
- Visió Optometria i Salut, Department d'Òptica i Optometria de Terrassa, Universitat Politècnica de Catalunya, Terrassa, Spain
| | - Laura Guisasola
- Visió Optometria i Salut, Department d'Òptica i Optometria de Terrassa, Universitat Politècnica de Catalunya, Terrassa, Spain
| | - Joan Perez-Corral
- Centre Universitari de la Visió, Universitat Politècnica de Catalunya, Terrassa, Spain
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Mattern AI, Neller K, Devenijn M, Schwahn H, Langenbucher A, Seitz B, Kaymak H. A Comparison of Optical Biometers Used in Children for Myopia Control. Klin Monbl Augenheilkd 2023; 240:1306-1313. [PMID: 37364606 PMCID: PMC10651350 DOI: 10.1055/a-2117-9335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 06/20/2023] [Indexed: 06/28/2023]
Abstract
PURPOSE To assess the reproducibility (i.e., inter-device reliability) of the biometers Topcon MYAH, Oculus Myopia Master, and Haag-Streit Lenstar LS900 with the Carl Zeiss IOLMaster 700 and the intra-subject repeatability in myopic children in order to reliably detect axial growth for myopia management. METHODS Twenty-two myopic children (11.1 ± 2.4 yr) with a spherical equivalent of - 3.53 ± 2.35 D were examined with each of the biometers to assess axial length (AL) and corneal parameters (steepK, flatK, meanK, vectors J0, J45), and16 of these children agreed to a second round of measurements. Reproducibility of the first measurements between the IOLMaster and every other biometer was assessed employing a Bland-Altman approach and paired Student's t-test. Repeatability was assessed as intra-subject standard deviation and was used to estimate the minimum time interval required between two AL measurements to reliably detect axial growth of an eye of at least 0.1 mm/year. RESULTS Repeatability for AL measurements was as follows: IOLMaster: 0.05 mm, Myopia Master: 0.06 mm, Myah: 0.06 mm, Lenstar: 0.04 mm; the respective minimal time interval for axial growth assessment in myopia management was estimated as 5.6, 6.6, 6.7, and 5.0 months, respectively. Best reproducibility of the AL measurement was found between IOLMaster and Lenstar [95% Limits of Agreement (LoA) for reproducibility - 0.06 to 0.02]. As regards to the measured means, Lenstar gave measures of AL that were longer than with the IOLMaster by 0.02 mm (p < 0.001). Myopia Master measures of meanK were significantly lower (by 0.21 D with p < 0.001) than the values from the IOLMaster. As for J0, all biometers deviated significantly from IOLMaster measurements (p < 0.05). CONCLUSION Generally good agreement was observed between all the biometers. When assessing myopia progression in children, a time frame of at least 6 months between the AL measurements is advisable in order to reliably determine any deviation from a normal growth pattern.
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Affiliation(s)
- Ann-Isabel Mattern
- Internationale Innovative Ophthalmochirurgie GbR c/o Breyer Kaymak and Klabe Augenchirurgie, Düsseldorf, Germany
| | - Kai Neller
- Internationale Innovative Ophthalmochirurgie GbR c/o Breyer Kaymak and Klabe Augenchirurgie, Düsseldorf, Germany
- Institute of Experimental Ophthalmology, Saarland University, Homburg, Germany
| | - Machteld Devenijn
- Internationale Innovative Ophthalmochirurgie GbR c/o Breyer Kaymak and Klabe Augenchirurgie, Düsseldorf, Germany
| | - Hartmut Schwahn
- Internationale Innovative Ophthalmochirurgie GbR c/o Breyer Kaymak and Klabe Augenchirurgie, Düsseldorf, Germany
| | - Achim Langenbucher
- Institute of Experimental Ophthalmology, Saarland University, Homburg, Germany
| | - Berthold Seitz
- Dept. of Ophthalmology, Saarland University Hospital and Faculty of Medicine, Homburg, Germany
| | - Hakan Kaymak
- Internationale Innovative Ophthalmochirurgie GbR c/o Breyer Kaymak and Klabe Augenchirurgie, Düsseldorf, Germany
- Institute of Experimental Ophthalmology, Saarland University, Homburg, Germany
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Walkowiak MP, Walkowiak D. From respiratory diseases to nervous system disorders: Unraveling the certified causes of influenza-associated deaths in Poland from 2000 to 2019. Influenza Other Respir Viruses 2023; 17:e13214. [PMID: 37964986 PMCID: PMC10640960 DOI: 10.1111/irv.13214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/18/2023] [Accepted: 10/01/2023] [Indexed: 11/16/2023] Open
Abstract
Background This study aims to accurately estimate influenza-associated deaths in Poland and their certified cause of death, due to significant discrepancies between official numbers and expected impact. Methods Excess influenza-associated mortality in Poland from 2000 to 2019 was calculated using Seasonal-Trend Decomposition Procedure based on LOESS (STL), which can detect non-linear trends and non-sinusoidal cycles. Excess mortality was then used as an explanatory variable in a model predicting monthly fluctuations of officially recorded causes of death from 2010 to 2019. Results A total of 142,000 conservative estimates of influenza-associated deaths were identified, representing 1.86% of overall mortality. Only 0.61% of influenza-associated deaths were officially recorded as influenza. Nearly half of certified influenza deaths were attributed to the seasonal baseline mortality, potentially doubling estimated impact based solely on influenza peaks. Influenza-associated deaths were frequently recorded as respiratory diseases (24.36%), with majority attributed to underlying conditions such as cardiovascular diseases (45.31%), cancer (9.06%), or diabetes (2.66%). Influenza-associated deaths were more commonly certified as nervous system diseases (1.84%) or mental disorders (1.04%), rather than influenza itself. There was a noticeable impact of influenza on secondary infections, such as meningococcal and gastrointestinal infections. Conclusion These findings highlight the importance of improved estimation for informing public health policy decisions.
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Affiliation(s)
| | - Dariusz Walkowiak
- Department of Organization and Management in Health CarePoznan University of Medical SciencesPoznańPoland
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Bobadilla-Rosado LO, Lopez-Pena G, Verduzco-Vazquez AT, Laparra-Escareno H, Anaya-Ayala JE, Azcorra H, Mendez-Dominguez N, Hinojosa CA. Five-year survival after retroperitoneal oncologic resection with and without vascular surgeon intervention. Vascular 2023; 31:868-873. [PMID: 35492002 DOI: 10.1177/17085381221093855] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
OBJECTIVES Retroperitoneal tumor resection commonly disturbs major vessels; therefore, surgical teams can recruit vascular surgeons to prevent injuries and improve the prognosis of oncologic patients. The objective of the present study is to establish long-term survival after retroperitoneal tumor resection surgery with an emphasis on the potential impact of preventing or repairing major vessel injuries when tumors are adjacent to the aorta or vena cava. METHODS Retrospective case series including all cases of surgical removal of retroperitoneal tumors between 2007 and 2020 in a highly specialized hospital in Mexico City. Long-term survival was defined as 5 years after surgical intervention. Descriptive statistics, group-comparison tests, and regression analysis were performed using Stata 16. RESULTS From a total of 70 cases, vascular injury occurred in 30 (42.8%) and the vascular surgeon intervened in 19 (27.1%) of them, 4 (21%) were performed by a vascular surgeon with planned intervention, and in 9 (47.3%) cases the vascular surgeon was called to join the surgery due to emergency. Intraoperative bleeding was 2-fold greater in the group with an emergent participation of vascular surgery in contrast with the planned intervention group (4, 235 mL vs 2, 035 mL, p = 0.04). The regression model revealed a significant association between the intervention of a vascular surgeon and long-term survival (OR 59.3, p = 0.03) after adjusting for sociodemographic and characteristics of oncologic nature. CONCLUSIONS Planned intervention of vascular surgeons in retroperitoneal tumor resection may have a positive impact not only in trans-operatory period, but also on long-term survival.
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Affiliation(s)
- Luis O Bobadilla-Rosado
- Section of Vascular Surgery and Endovascular Therapy, Department of Surgery, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Mexico City, Mexico
| | - Gabriel Lopez-Pena
- Section of Vascular Surgery and Endovascular Therapy, Department of Surgery, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Mexico City, Mexico
| | - Ana T Verduzco-Vazquez
- Section of Vascular Surgery and Endovascular Therapy, Department of Surgery, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Mexico City, Mexico
| | - Hugo Laparra-Escareno
- Section of Vascular Surgery and Endovascular Therapy, Department of Surgery, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Mexico City, Mexico
| | - Javier E Anaya-Ayala
- Section of Vascular Surgery and Endovascular Therapy, Department of Surgery, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Mexico City, Mexico
| | - Hugo Azcorra
- Centro de Investigaciones Silvio Zavala, Universidad Modelo de Merida, Mexico
| | - Nina Mendez-Dominguez
- Vice Direction of Research and Learning, Hospital Regional de Alta Especialidad de la Peninsula de Yucatan, Merida, Mexico
| | - Carlos A Hinojosa
- Section of Vascular Surgery and Endovascular Therapy, Department of Surgery, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Mexico City, Mexico
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Arad T, Awiszus L, Ackermann H, Schmack I, Kohnen T. Anterior Segment Biometry in a Caucasian Population with Cataracts. Curr Eye Res 2023; 48:930-938. [PMID: 37408497 DOI: 10.1080/02713683.2023.2233119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 06/30/2023] [Indexed: 07/07/2023]
Abstract
PURPOSE To investigate biometric factors of the anterior segment of phakic eyes with cataracts. METHODS This population-based study included Caucasian patients with cataracts in the University Eye Hospital, Goethe University Frankfurt, Germany. Biometric parameters were measured using the swept-source optical coherence tomography method. Patients were grouped into intermediate stages based on decades of life. RESULTS In total, 6289 eyes of 3615 patients (age: 70.67 ± 8.42 years) were included. Age-related reductions in the anterior chamber depth (mean ± standard deviation) decreased from 3.26 ± 0.42 mm (group A: 55-59 years) to 2.94 ± 0.4 mm (group G: 85-89 years), and those in the axial length decreased from 24.37 ± 1.87 mm (group A) to 23.39 ± 1.07 mm (group G). Likewise, the white-to-white distance decreased from 12.12 ± 0.48 mm (group A) to 11.96 ± 0.47 mm (group G). Lens thickness tended to increase accordingly from 4.39 ± 0.36 µm (group A) to 4.9 ± 0.40 µm (group G). A comparison of the eyes showed no detectable lateral difference regarding the biometric parameters between the groups (axial length: p = 0.26, Rosenthal effect size = 0.03; lens thickness: p = 0.12, R = 0.03; anterior chamber depth: p = 0.63, Rosenthal effect size = 0.01). The axial length and anterior chamber depth differed significantly between sexes (r = 0.22, p < 0.0001 and r = 0.16, p < 0.0001, respectively). Multiple regression analysis of the anterior chamber depth as a function of biometry parameters as well as age and sex additionally indicated a positive correlation of anterior chamber depth with white-to-white distance (b = 0.32, p = 10-5), axial length (b = 0.10, p = 10-5), keratometry (b = 0.07, p = 10-5), and lens thickness (b=-0.05, p = 10-5) with a high effect size (Cohen f2=1.866, p = 10-5) and strong multiple correlation coefficient (Rosenthal effect size = 0.80, p = 10-5). CONCLUSIONS In the anterior segment, there are age- and sex-dependent changes in biometric parameters. In addition, changes in anterior chamber depth were noted in relation to white-to-white distance, axial length, keratometry, and lens thickness. These data should be considered in lens calculation formulas.
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Affiliation(s)
- Tschingis Arad
- Department of Ophthalmology, Goethe University, Frankfurt, Germany
| | - Lucas Awiszus
- Department of Ophthalmology, Goethe University, Frankfurt, Germany
| | - Hanns Ackermann
- Institute for Biostatistics, Goethe University, Frankfurt, Germany
| | - Ingo Schmack
- Department of Ophthalmology, Goethe University, Frankfurt, Germany
| | - Thomas Kohnen
- Department of Ophthalmology, Goethe University, Frankfurt, Germany
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21
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Du Y, Meng J, He W, Lu Y, Zhu X. Challenges of refractive cataract surgery in the era of myopia epidemic: a mini-review. Front Med (Lausanne) 2023; 10:1128818. [PMID: 37795415 PMCID: PMC10546203 DOI: 10.3389/fmed.2023.1128818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 09/04/2023] [Indexed: 10/06/2023] Open
Abstract
Myopia is the leading cause of visual impairment in the world. With ever-increasing prevalence in these years, it creates an alarming global epidemic. In addition to the difficulty in seeing distant objects, myopia also increases the risk of cataract and advances its onset, greatly affecting the productivity of myopes of working age. Cataract management in myopic eyes, especially highly myopic eyes is originally more complicated than that in normal eyes, whereas the growing population of cataract with myopia, increasing popularity of corneal and lens based refractive surgery, and rising demand for spectacle independence after cataract surgery all further pose unprecedented challenges to ophthalmologists. Previous history of corneal refractive surgery and existence of implantable collamer lens will both affect the accuracy of biometry including measurement of corneal curvature and axial length before cataract surgery, which may result in larger intraocular lens (IOL) power prediction errors and a compromise in the surgical outcome especially in a refractive cataract surgery. A prudent choice of formula for cataract patients with different characteristics is essential in improving this condition. Besides, the characteristics of myopic eyes might affect the long-term stability of IOL, which is important for the maintenance of visual outcomes especially after the implantation of premium IOLs, thus a proper selection of IOL accordingly is crucial. In this mini-review, we provide an overview of the impact of myopia epidemic on treatment for cataract and to discuss new challenges that surgeons may encounter in the foreseeable future when planning refractive cataract surgery for myopic patients.
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Affiliation(s)
- Yu Du
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
- State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
| | - Jiaqi Meng
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
- State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
| | - Wenwen He
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
- State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
| | - Yi Lu
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
- State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
| | - Xiangjia Zhu
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China
- State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
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Garcia Ardoy E, Mateos N, Roda L, Torrado Sierra O, Baptista AM, Serra PM. Repeatability and agreement of swept-source optical coherence tomography and partial coherence interferometry biometers in myopes. Clin Exp Optom 2023; 106:783-792. [PMID: 36508569 DOI: 10.1080/08164622.2022.2152312] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/19/2022] [Accepted: 11/22/2022] [Indexed: 12/15/2022] Open
Abstract
CLINICAL RELEVANCE Biometric measurements in the context of myopia are fundamental to detect eyes at risk of developing myopia and during the follow-up of patients with myopia control treatment. Thus, the accuracy of biometers has high clinical relevance. BACKGROUND The Myopia Master is a new biometer based on partial coherence interferometry especially dedicated to the follow-up of myopic patients. This study aims to assess the repeatability of the Myopia Master and evaluate its agreement with a swept-source optical coherence interferometry biometer (IOL Master 700). METHODS This cross-sectional prospective study assessed the biometric parameters of two groups of myopes (age range: 8-16 years old), spectacle corrected (n = 60) and orthokeratology contact lens wearers (n = 60). One senior optometrist performed two consecutive measurements per instrument, which included axial length, mean keratometry and horizontal visible iris diameter (HVID). The repeatability of each device and the agreement between devices were assessed by the dispersion of the measurement differences, for AL, mean keratometry, corneal astigmatism and HVID. RESULTS The two biometers measured approximately the same value in both measurements. Test-retest repeatability tended to be lower than clinical significant thresholds, in particular, for AL and mean keratometry. Corneal-related parameters tended to have lower repeatability in the orthokeratology group, especially mean keratometry. The agreement between instruments revealed statistically significant differences between devices with the SS-OCT measuring longer eyes, steeper corneas and larger HVID. CONCLUSIONS In a paediatric population, the Myopia Master showed clinically acceptable repeatability levels, but the IOL Master 700 demonstrated superior repeatability. Eyes treated with orthokeratology may compromise the repeatability of the corneal-related parameters. The Myopia Master and the IOL Master 700 are repeatable devices appropriate for monitoring myopia progression, but the differences observed do not allow their use interchangeably.
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Affiliation(s)
- Elisa Garcia Ardoy
- Paediatric's Ophthalmology Department, Ophthalmology Clinic Vista Sánchez Trancón, Badajoz, Spain
| | - Nuria Mateos
- Paediatric's Ophthalmology Department, Ophthalmology Clinic Vista Sánchez Trancón, Badajoz, Spain
| | - Laura Roda
- Paediatric's Ophthalmology Department, Ophthalmology Clinic Vista Sánchez Trancón, Badajoz, Spain
| | - Oscar Torrado Sierra
- Paediatric's Ophthalmology Department, Ophthalmology Clinic Vista Sánchez Trancón, Badajoz, Spain
| | | | - Pedro M Serra
- Paediatric's Ophthalmology Department, Ophthalmology Clinic Vista Sánchez Trancón, Badajoz, Spain
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Zhang J, Chen F, Han X, Qiu X, Liu Z, Chen X, Jin G, Qu B, Yao H, Ye Y, Yu K, Tan X, Luo L. Vault Height Is a Key Predictive Factor for Anterior Segment Measurement Error by IOLMaster 700 in Eyes With Phakic Intraocular Lens. Transl Vis Sci Technol 2023; 12:16. [PMID: 37738056 PMCID: PMC10519433 DOI: 10.1167/tvst.12.9.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 08/22/2023] [Indexed: 09/23/2023] Open
Abstract
Purpose To identify risk factors of ocular anterior segment measurement error by the IOLMaster 700 in eyes implanted with an implantable Collamer lens (ICL). Methods In total, 152 patients with clear lens (152 eyes, group 1) and another 32 cataract patients (57 eyes, group 2) who underwent ICL implantation were included, and the presence of measurement error by the IOLMaster 700 was determined based on B-scan images. The risk factors for measurement error were evaluated by logistic regression, and the optimal threshold was determined using receiver operating characteristic analysis. Results The ICL was misidentified as the anterior surface of the crystalline lens in 51.97% of eyes (79/152) in group 1 and 80.70% of eyes (46/57) in group 2. For every 100-µm decrease in the vault height, a 3.57- and 5.78-fold increase in the risk of measurement error was observed in group 1 and group 2, respectively. We identified an optimal threshold of the vault height at 389.47 µm for predicting biometric measurement error in eyes implanted with ICL, which showed an area under the curve of 0.93 (95% confidence interval, 0.90-0.97), a sensitivity of 0.87, and a specificity of 0.86. Conclusions Patients with ICL implantation, particularly those with a vault height less than 389.47 µm, are at a greater risk of anterior segment biometric measurement error by the IOLMaster 700. Translational Relevance The threshold of vault height can help to identify high-risk patients and further optimize biometric measurement.
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Affiliation(s)
- Jiaqing Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Fei Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Xiaotong Han
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Xiaozhang Qiu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Zhenzhen Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Xiaoyun Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Guangming Jin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Bo Qu
- Peking University Third Hospital, Peking, China
| | - Huan Yao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Yiming Ye
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Keming Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Xuhua Tan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Lixia Luo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
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Multack S, Plummer N, Smits G, Hall B. Randomized Trial Comparing Prediction Accuracy of Two Swept Source Optical Coherence Tomography Biometers. Clin Ophthalmol 2023; 17:2423-2428. [PMID: 37609646 PMCID: PMC10441632 DOI: 10.2147/opth.s407538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 08/03/2023] [Indexed: 08/24/2023] Open
Abstract
Purpose To compare the prediction accuracy of the Argos biometer using standard keratometry to the prediction accuracy of the IOLMaster 700 biometer using Total Keratometry. Methods This was a randomized, prospective, single surgeon study of 80 right eyes of 80 patients that had preoperative biometry with both the Argos and IOLMaster 700 devices, followed by cataract surgery and intraocular lens (IOL) implantation. Prediction errors (directional and absolute) for each device were determined from the 1 month postoperative manifest refraction. Results The directional prediction error was 0.07 ± 0.32 D for the Argos and 0.08 ± 0.34 D for the IOLMaster 700. The mean of the difference in prediction error (directional) was 0.02 D, which was not statistically significant (p > 0.05). The absolute prediction error was 0.21 ± 0.25 D for the Argos and 0.25 ± 0.24 D for the IOLMaster 700. The mean of the difference in absolute prediction error was 0.04 D, which was statistically significant (p < 0.004) but not clinically significant. The percentage of eyes with absolute prediction error ≤ 0.5 D was 91% (73 eyes) for the Argos and 88% (70 eyes) for the IOLMaster 700. This difference was not statistically significant. Conclusion The prediction accuracies were similar between the Argos and IOLMaster 700 in eyes with normal axial length. There was a significant difference in mean absolute prediction error between devices; however, this was not clinically meaningful.
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Röggla V, Langenbucher A, Leydolt C, Schartmüller D, Schwarzenbacher L, Hoffmann P, Menapace R. Best fit formula approach in delayed sequential bilateral cataract surgery. Clin Exp Ophthalmol 2023; 51:559-565. [PMID: 37264533 DOI: 10.1111/ceo.14261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 05/09/2023] [Accepted: 05/18/2023] [Indexed: 06/03/2023]
Abstract
BACKGROUND We evaluated whether the best-fit intraocular lens (IOL) power formula for the first operated eye (BF1) was also the most accurate formula for the second eye. METHODS This was a retrospective study of 152 patients who underwent uncomplicated delayed bilateral cataract surgery with a minimum delay of 3 weeks using only one 1-piece IOL (HOYA, Vivinex) at the Medical University of Vienna, Austria. Seven different formulae (Barrett Universal II, Castrop, Haigis, Hoffer Q, Holladay 1, Kane, and SRK/T) were investigated to test the formula selection approach with regard to the calculated mean and median absolute prediction errors (MAE/MedAE). RESULTS The mean intraindividual difference in axial length was 0.2 mm (±0.3 mm). BF1 coincided with the best-fit formula for the second eye (BF2) in 56% of patients (p < 0.05). Using BF1 for the second eye led to a lower MedAE (0.22 dioptre, D) than using a formula at random (0.33 D) and was less accurate than using the best-fit formula for each eye separately (0.1 D). The MedAEs of all formulae were generally low, ranging from 0.28 to 0.35 D. CONCLUSION Using BF1 for the second eye led to a lower MedAE than the random selection of a formula. Therefore, BF1 can be used for the second eye if the surgeon is unsure of the choice of formula.
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Affiliation(s)
- Veronika Röggla
- Department of Ophthalmology and Optometry, Medical University of Vienna, Vienna, Austria
| | - Achim Langenbucher
- Institut Für Experimentelle Ophthalmologie, Saarland University, Homburg, Germany
| | - Christina Leydolt
- Department of Ophthalmology and Optometry, Medical University of Vienna, Vienna, Austria
| | - Daniel Schartmüller
- Department of Ophthalmology and Optometry, Medical University of Vienna, Vienna, Austria
| | - Luca Schwarzenbacher
- Department of Ophthalmology and Optometry, Medical University of Vienna, Vienna, Austria
| | - Peter Hoffmann
- Department of Ophthalmology, Augen-und Laserklinik, Castrop-Rauxel, Germany
| | - Rupert Menapace
- Department of Ophthalmology and Optometry, Medical University of Vienna, Vienna, Austria
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Nilagiri VK, Lee SSY, Lingham G, Charng J, Yazar S, Hewitt AW, Griffiths LR, Sanfilippo PG, Tsai TH, Mackey DA. Distribution of Axial Length in Australians of Different Age Groups, Ethnicities, and Refractive Errors. Transl Vis Sci Technol 2023; 12:14. [PMID: 37594450 PMCID: PMC10445212 DOI: 10.1167/tvst.12.8.14] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/06/2023] [Indexed: 08/19/2023] Open
Abstract
Purpose Treatments are available to slow myopic axial elongation. Understanding normal axial length (AL) distributions will assist clinicians in choosing appropriate treatment for myopia. We report the distribution of AL in Australians of different age groups and refractive errors. Methods Retrospectively collected spherical equivalent refraction (SER) and AL data of 5938 individuals aged 5 to 89 years from 8 Australian studies were included. Based on the SER, participants were classified as emmetropes, myopes, and hyperopes. Two regression model parameterizations (piece-wise and restricted cubic splines [RCS]) were applied to the cross-sectional data to analyze the association between age and AL. These results were compared with longitudinal data from the Raine Study where the AL was measured at age 20 (baseline) and 28 years. Results A piece-wise regression model (with 1 knot) showed that myopes had a greater increase in AL before 18 years by 0.119 mm/year (P < 0.001) and after 18 years by 0.011 mm/year (P < 0.001) compared to emmetropes and hyperopes, with the RCS model (with 3 knots) showing similar results. The longitudinal data from the Raine Study revealed that, when compared to emmetropes, only myopes showed a significant change in the AL in young adulthood (by 0.016 mm/year, P < 0.001). Conclusions The AL of myopic eyes increases more rapidly in childhood and slightly in early adulthood. Further studies of longitudinal changes in AL, particularly in childhood, are required to guide myopia interventions. Translational Relevance The axial length of myopic eyes increases rapidly in childhood, and there is a minimal increase in the axial length in non-myopic eyes after 18 years of age.
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Affiliation(s)
- Vinay Kumar Nilagiri
- Centre for Ophthalmology and Visual Science (incorporating the Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia
| | - Samantha Sze-Yee Lee
- Centre for Ophthalmology and Visual Science (incorporating the Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia
| | - Gareth Lingham
- Centre for Ophthalmology and Visual Science (incorporating the Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia
- Centre for Eye Research Ireland, School of Physics, Clinical and Optometric Sciences, Technological University Dublin, Dublin, Ireland
| | - Jason Charng
- Centre for Ophthalmology and Visual Science (incorporating the Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia
- Department of Optometry, School of Allied Health, University of Western Australia, Perth, Western Australia, Australia
| | - Seyhan Yazar
- Garvan-Weizmann Centre for Cellular Genomics, Garvan Institute of Medical Research, Sydney, Australia
| | - Alex W. Hewitt
- School of Medicine, Menzies Research Institute Tasmania, University of Tasmania, Tasmania, Australia
- Centre for Eye Research Australia, University of Melbourne, Department of Ophthalmology, Royal Victorian Eye and Ear Hospital, Melbourne, Victoria, Australia
| | - Lyn R. Griffiths
- Genomics Research Centre, Centre for Genomics and Personalised Health, School of Biomedical Sciences, Queensland University of Technology, Queensland, Australia
| | - Paul G. Sanfilippo
- Centre for Eye Research Australia, University of Melbourne, Department of Ophthalmology, Royal Victorian Eye and Ear Hospital, Melbourne, Victoria, Australia
| | - Tzu-Hsun Tsai
- Department of Ophthalmology, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - David A. Mackey
- Centre for Ophthalmology and Visual Science (incorporating the Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia
- School of Medicine, Menzies Research Institute Tasmania, University of Tasmania, Tasmania, Australia
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Blehm C, Hall B. Comparing Predictive Accuracy of a Swept Source Optical Coherence Tomography Biometer and an Optical Low Coherence Reflectometry Biometer. Clin Ophthalmol 2023; 17:2125-2131. [PMID: 37521148 PMCID: PMC10386863 DOI: 10.2147/opth.s421504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/13/2023] [Indexed: 08/01/2023] Open
Abstract
Purpose To compare the refractive accuracy resulting from calculations based on measurements with a swept-source optical coherence tomography (SS-OCT) biometer compared to calculations based on measurements with an optical low coherence reflectometry (OLCR) biometer at one month postoperatively. Methods This was a retrospective comparative non-interventional study of preoperative biometry and postoperative refraction and visual acuity of 200 eyes. All eyes had preoperative biometry with both the Argos (Movu, a Santec company) and Lenstar LS900 (Haag-Streit AG) devices. Data were collected for mean postoperative prediction error (directional and absolute), preoperative mean K, delta K (corneal astigmatism), axial length, and anterior chamber depth. Results The mean directional prediction error was -0.15 ± 0.47 D for Argos and -0.31 ± 0.50 D for Lenstar LS900, and there was a statistically significant mean of the differences (0.16 ± 0.24 D; p < 0.001). The mean absolute prediction error was 0.35 ± 0.34 D for Argos and 0.42 ± 0.41 D for Lenstar LS900, and there was a statistically significant mean of the differences (-0.07 ± 0.24 D; p < 0.001). Neither the differences in directional prediction error nor the differences in absolute prediction error were clinically significant. Conclusion The directional and absolute prediction accuracies were statistically significant, but not clinically different between the Argos and Lenstar LS900 devices. In addition, differences between preoperative K, AL, and ACD measurements were not clinically significant.
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Mahmoud O, Andrews C, Soeken T, Nallasamy S, Nallasamy N. Optical Biometry Changes Throughout Childhood and Adolescence in Patients Wearing Ortho-K Lenses. Clin Ophthalmol 2023; 17:1919-1927. [PMID: 37425028 PMCID: PMC10329451 DOI: 10.2147/opth.s413810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 06/08/2023] [Indexed: 07/11/2023] Open
Abstract
Background Orthokeratology has been shown to suppress progressive myopia in some children. We examine the changes in optical biometry parameters in orthokeratology (Ortho-K) patients, in a retrospective longitudinal study at a tertiary eye care center in Ann Arbor, MI, USA. Methods Optical biometry measurements obtained with the Lenstar LS 900 (Haag-Streit USA Inc, EyeSuite software version i9.1.0.0) were aggregated from 170 patients who had undergone Ortho-K for myopia correction between 5 and 20 years of age. Pre-intervention biometry measurements were compared with follow-up measurements done 6-18 months after initiation of Ortho-K. Linear mixed models were used to quantify associations in biometry changes with age of intervention allowing for correlation between measurements on two eyes of the same patient. Results A total of 91 patients were included in the study. Axial length increased through the age of 15.7 ± 0.84 years for Ortho-K patients at our center. The growth curve in our Ortho-K population was comparable to previously published normal growth curves in Wuhan and Germany populations. Corneal thickness and keratometry decreased at a stable rate regardless of age of intervention (-7.9 µm, 95% CI [-10.2, -5.7], p < 0.001). Conclusion In our population, Ortho-K did not appear to affect the overall trajectory of axial length progression when compared to normal growth curves, despite showing a previously described reduction in corneal thickness. As Ortho-K has been shown to have varying effects that differ from individual to individual, it continues to be important to reassess its effects on new populations to better understand its ideal uses.
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Affiliation(s)
- Ossama Mahmoud
- Kellogg Eye Center Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI, USA
- School of Medicine, Wayne State University, Detroit, MI, USA
| | - Chris Andrews
- Kellogg Eye Center Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI, USA
| | - Timothy Soeken
- Kellogg Eye Center Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI, USA
| | - Sudha Nallasamy
- The Vision Center, Children’s Hospital Los Angeles, Los Angeles, CA, USA
- USC Roski Eye Institute, Keck School of Medicine of the University of Southern California, LA, California, USA
| | - Nambi Nallasamy
- Kellogg Eye Center Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI, USA
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA
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Manzo L, Orlandi G, Gabrielli O, Toscano P, Di Lella E, Lettieri A, Mazzarelli LL, Sica G, Di Meglio L, Di Meglio L, Ruffo G, Sica C, Gulino FA, Incognito GG, Tuscano A, Giorno A, Di Meglio A. Fetal Cerebellar Area: Ultrasound Reference Ranges at 13-39 Weeks of Gestation. J Clin Med 2023; 12:4080. [PMID: 37373772 DOI: 10.3390/jcm12124080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/01/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND AND OBJECTIVES The present study aims to provide prenatal 2-dimensional ultrasonographic (2D-US) nomograms of the normal cerebellar area. MATERIALS AND METHODS This is a prospective cross-sectional analysis of 252 normal singleton pregnancies, ranging from 13 to 39 weeks of gestation. The operator performed measurements of the fetal cerebellar area in the transverse plane using 2D-US. The relationship between cerebellar area and gestational age (GA) was determined through regression equations. RESULTS A significant, strong positive correlation was investigated between the cerebellar area with GA (r-value = 0.89), and a positive correlation indicates that with increasing GA, the cerebellar area increased in all the participants of the study. Several 2D-US nomograms of the normal cerebellar area were provided, and an increase of 0.4% in the cerebellar area each week of GA was reported. CONCLUSIONS We presented information on the typical dimensions of the fetal cerebellar area throughout gestation. In future studies, it could be evaluated how the cerebellar area changes with cerebellar abnormalities. It should be established if calculating the cerebellar area in addition to the routine transverse cerebellar diameter may help in discriminating posterior fossa anomalies or even help to identify anomalies that would otherwise remain undetected.
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Affiliation(s)
- Luigi Manzo
- Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, 80138 Naples, Italy
- Diagnostica Ecografica e Prenatale di A. Di Meglio, 80133 Naples, Italy
| | - Giuliana Orlandi
- Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, 80138 Naples, Italy
- Diagnostica Ecografica e Prenatale di A. Di Meglio, 80133 Naples, Italy
| | - Olimpia Gabrielli
- Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, 80138 Naples, Italy
- Diagnostica Ecografica e Prenatale di A. Di Meglio, 80133 Naples, Italy
| | - Paolo Toscano
- Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, 80138 Naples, Italy
- Diagnostica Ecografica e Prenatale di A. Di Meglio, 80133 Naples, Italy
| | - Enrica Di Lella
- Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, 80138 Naples, Italy
- Diagnostica Ecografica e Prenatale di A. Di Meglio, 80133 Naples, Italy
| | - Antonia Lettieri
- Diagnostica Ecografica e Prenatale di A. Di Meglio, 80133 Naples, Italy
| | - Laura Letizia Mazzarelli
- Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, 80138 Naples, Italy
- Diagnostica Ecografica e Prenatale di A. Di Meglio, 80133 Naples, Italy
| | - Giordana Sica
- School of Medicine, University of Campania Luigi Vanvitelli, 81031 Caserta, Italy
| | - Letizia Di Meglio
- Radiology Department, School of Medicine, University of Milan, 20122 Milan, Italy
| | - Lavinia Di Meglio
- Pediatric Department, Bambino Gesù Children's Research Hospital IRCCS, 00165 Rome, Italy
| | - Gabriele Ruffo
- Diagnostica Ecografica e Prenatale di A. Di Meglio, 80133 Naples, Italy
| | - Carmine Sica
- Diagnostica Ecografica e Prenatale di A. Di Meglio, 80133 Naples, Italy
| | - Ferdinando Antonio Gulino
- Department of Obstetrics and Gynaecology, Azienda di Rilievo Nazionale e di Alta Specializzazione (ARNAS) Garibaldi Nesima, 95124 Catania, Italy
| | - Giosuè Giordano Incognito
- Department of General Surgery and Medical Surgical Specialties, University of Catania, 95123 Catania, Italy
| | - Attilio Tuscano
- Department of General Surgery and Medical Surgical Specialties, University of Catania, 95123 Catania, Italy
| | - Alice Giorno
- Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, 80138 Naples, Italy
| | - Aniello Di Meglio
- Diagnostica Ecografica e Prenatale di A. Di Meglio, 80133 Naples, Italy
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Biela K, Winiarczyk M, Borowicz D, Mackiewicz J. Dry Eye Disease as a Cause of Refractive Errors After Cataract Surgery - A Systematic Review. Clin Ophthalmol 2023; 17:1629-1638. [PMID: 37304333 PMCID: PMC10257420 DOI: 10.2147/opth.s406530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/01/2023] [Indexed: 06/13/2023] Open
Abstract
Dry eye disease (DED) is a multifactorial ocular surface disorder characterized by loss of tear film homeostasis with associated ocular symptoms, like dryness, foreign body sensation, and inflammation. Numerous reports confirm an increase in dry eye symptoms after cataract surgery. DED also significantly disturbs preoperative biometric measurements, mainly by changes in keratometry measurements. The purpose of this study is to evaluate the effect of DED on biometric measurements before cataract surgery and postoperative refractive errors. PubMed database was searched for keywords: cataract surgery, dry eye disease, refractive error, refractive outcomes, keratometry, and biometry. Four clinical studies evaluating the effect of DED on refractive errors were included. In all studies, biometry was performed before and after dry eye treatment, and the mean absolute error was compared. Various substances have been used to treat dry eye, such as cyclosporin A, liftitegrast, and loteprednol. The refractive error was significantly lower after treatment in all studies. The results unanimously indicate that refractive errors can be reduced by proper treatment of DED before cataract surgery.
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Affiliation(s)
- Katarzyna Biela
- Department of Vitreoretinal Surgery, Medical University of Lublin, Lublin, 20079, Poland
- Department of Ophthalmology, Provincial Hospital in Zamosc, al. John Paul II 10, Zamosc, 22400, Poland
| | - Mateusz Winiarczyk
- Department of Vitreoretinal Surgery, Medical University of Lublin, Lublin, 20079, Poland
| | - Dorota Borowicz
- Department of Ophthalmology, Provincial Hospital in Zamosc, al. John Paul II 10, Zamosc, 22400, Poland
| | - Jerzy Mackiewicz
- Department of Vitreoretinal Surgery, Medical University of Lublin, Lublin, 20079, Poland
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Douet Vannucci V, Marchand T, Hennequin A, Caci H, Staccini P. The EPIDIA4Kids protocol for a digital epidemiology study on brain functioning in children, based on a multimodality biometry tool running on an unmodified tablet. Front Public Health 2023; 11:1185565. [PMID: 37325324 PMCID: PMC10267880 DOI: 10.3389/fpubh.2023.1185565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 04/28/2023] [Indexed: 06/17/2023] Open
Abstract
Introduction Neurodevelopment and related mental disorders (NDDs) are one of the most frequent disabilities among young people. They have complex clinical phenotypes often associated with transnosographic dimensions, such as emotion dysregulation and executive dysfunction, that lead to adverse impacts in personal, social, academic, and occupational functioning. Strong overlap exists then across NDDs phenotypes that are challenging for diagnosis and therapeutic intervention. Recently, digital epidemiology uses the rapidly growing data streams from various devices to advance our understanding of health's and disorders' dynamics, both in individuals and the general population, once coupled with computational science. An alternative transdiagnostic approach using digital epidemiology may thus better help understanding brain functioning and hereby NDDs in the general population. Objective The EPIDIA4Kids study aims to propose and evaluate in children, a new transdiagnostic approach for brain functioning examination, combining AI-based multimodality biometry and clinical e-assessments on an unmodified tablet. We will examine this digital epidemiology approach in an ecological context through data-driven methods to characterize cognition, emotion, and behavior, and ultimately the potential of transdiagnostic models of NDDs for children in real-life practice. Methods and analysis The EPIDIA4Kids is an uncontrolled open-label study. 786 participants will be recruited and enrolled if eligible: they are (1) aged 7 to 12 years and (2) are French speaker/reader; (3) have no severe intellectual deficiencies. Legal representative and children will complete online demographic, psychosocial and health assessments. During the same visit, children will perform additionally a paper/pencil neuro-assessments followed by a 30-min gamified assessment on a touch-screen tablet. Multi-stream data including questionnaires, video, audio, digit-tracking, will be collected, and the resulting multimodality biometrics will be generated using machine- and deep-learning algorithms. The trial will start in March 2023 and is expected to end by December 2024. Discussion We hypothesize that the biometrics and digital biomarkers will be capable of detecting early onset symptoms of neurodevelopment compared to paper-based screening while as or more accessible in real-life practice.
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Affiliation(s)
- Vanessa Douet Vannucci
- R&D Lab, O-Kidia, Nice, France
- URE Risk Epidemiology Territory INformatics Education and Health (URE RETINES), Université Côte d’Azur, Nice, France
| | - Théo Marchand
- R&D Lab, O-Kidia, Nice, France
- Bioelectronic Lab, Ecole des Mines de Saint-Étienne, Gardanne, France
| | | | - Hervé Caci
- Hôpitaux Pédiatriques de Nice CHU Lenval, Nice, France
- Centre de Recherche en Épidémiologie and Santé des Populations (CESP), INSERM U1018, Villejuif, France
| | - Pascal Staccini
- URE Risk Epidemiology Territory INformatics Education and Health (URE RETINES), Université Côte d’Azur, Nice, France
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Bott OJ, Berger U, Egbert N, Herrmann C, Schneider B, Sellemann B, Spreckelsen C, Strahwald B, Varghese J, Winter A. On the Effective Dissemination and Use of Learning Objectives Catalogs for Health Information Curricula Development. Stud Health Technol Inform 2023; 302:438-442. [PMID: 37203712 DOI: 10.3233/shti230168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Catalogs of competency-based learning objectives (CLO) were introduced and promoted as a prerequisite for high-quality, systematic curriculum development. While this is common in medicine, the consistent use of CLO is not yet well established in epidemiology, biometry, medical informatics, biomedical informatics, and nursing informatics especially in Germany. This paper aims to identify underlying obstacles and give recommendations in order to promote the dissemination of CLO for curricular development in health data and information sciences. To determine these obstacles and recommendations a public online expert workshop was organized. This paper summarizes the findings.
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Affiliation(s)
- Oliver J Bott
- Working Group Curricula of Medical Informatics of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS) e. V., Germany
| | - Ursula Berger
- Working Group Teaching and Didactics of Biometry of the International Biometric Society - German Region (IBS-DR) and GMDS e.V., Germany
| | - Nicole Egbert
- Working Group Nursing Informatics of the GMDS e.V., Germany
| | - Carolin Herrmann
- Working Group Teaching and Didactics of Biometry of the International Biometric Society - German Region (IBS-DR) and GMDS e.V., Germany
| | - Birgit Schneider
- SMITH - Joint Expertise Center for Teaching (SMITH-JET), Germany
| | | | - Cord Spreckelsen
- SMITH - Joint Expertise Center for Teaching (SMITH-JET), Germany
| | | | - Julian Varghese
- Working Group Medical Informatics Education in Medicine of the GMDS e.V., Germany
| | - Alfred Winter
- SMITH - Joint Expertise Center for Teaching (SMITH-JET), Germany
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Costello L, Goncalves K, De Los Santos Gomez P, Simpson A, Maltman V, Ritchie P, Tasseff R, Isfort R, Dicolandrea T, Wei X, Määttä A, Karakesisoglou I, Markiewicz E, Bascom CC, Przyborski S. Quantitative morphometric analysis of intrinsic and extrinsic skin ageing in individuals with Fitzpatrick skin types II-III. Exp Dermatol 2023; 32:620-631. [PMID: 36695185 PMCID: PMC10947487 DOI: 10.1111/exd.14754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 01/11/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023]
Abstract
Skin ageing is an intricate physiological process affected by intrinsic and extrinsic factors. There is a demand to understand how the skin changes with age and photoexposure in individuals with Fitzpatrick skin types I-III due to accelerated photoageing and the risk of cutaneous malignancies. To assess the structural impact of intrinsic and extrinsic ageing, we analysed 14 skin parameters from the photoprotected buttock and photoexposed dorsal forearm of young and ageing females with Fitzpatrick skin types II-III (n = 20) using histomorphic techniques. Whilst the minimum viable epidermis (Emin ) remained constant (Q > 0.05), the maximum viable epidermis (Emax ) was decreased by both age and photoexposure (Q ≤ 0.05), which suggests that differences in epidermal thickness are attributed to changes in the dermal-epidermal junction (DEJ). Changes in Emax were not affected by epidermal cell proliferation. For the first time, we investigated the basal keratinocyte morphology with age and photoexposure. Basal keratinocytes had an increased cell size, cellular height and a more columnar phenotype in photoexposed sites of young and ageing individuals (Q ≤ 0.05), however no significant differences were observed with age. Some of the most striking changes were observed in the DEJ, and a decrease in the interdigitation index was observed with both age and photoexposure (Q ≤ 0.001), accompanied by a decreased height of rête ridges and dermal papilla. Interestingly, young photoexposed skin was comparable to ageing skin across many parameters, and we hypothesise that this is due to accelerated photoageing. This study highlights the importance of skin care education and photoprotection from an early age.
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Affiliation(s)
| | | | | | - Amy Simpson
- Department of BiosciencesDurham UniversityDurhamUK
| | | | | | - Ryan Tasseff
- Mason Business Centre, Procter and GambleOhioUSA
| | | | | | - Xingtao Wei
- Mason Business Centre, Procter and GambleOhioUSA
| | - Arto Määttä
- Department of BiosciencesDurham UniversityDurhamUK
| | | | - Ewa Markiewicz
- Department of BiosciencesDurham UniversityDurhamUK
- Hexis Lab LimitedNewcastle upon TyneUK
| | | | - Stefan Przyborski
- Department of BiosciencesDurham UniversityDurhamUK
- Reprocell EuropeGlasgowUK
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Jesus ADS, El Bizri HR, Fa JE, Valsecchi J, Rabelo RM, Mayor P. Comparative gastrointestinal organ lengths among Amazonian primates (Primates: Platyrrhini). Am J Biol Anthropol 2023. [PMID: 37092603 DOI: 10.1002/ajpa.24751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 04/11/2023] [Accepted: 04/16/2023] [Indexed: 04/25/2023]
Abstract
OBJECTIVES The morphological features of the gastrointestinal tract (GIT) in mammals reflect a species' food niche breadth and dietary adaptations. For many wild mammals, the relationship between the structure of the GIT and diet is still poorly understood, for example, the GIT for frugivorous primates is usually classified as unspecialized and homogeneous. Here, we compare the GIT structure of 13 primate species from the three families of extant platyrrhines (Atelidae, Pitheciidae, and Cebidae) in Amazonia, and discuss possible evolutionary adaptations to different diets and trophic niches. METHODS We measured the length of the esophagus, stomach, small intestine, large intestine, cecum, colon, and rectum of the digestive tracts of 289 primate specimens. We determined the allometric relationships of the different tubular organs with the total length of the GIT as a proxy of specimen body size. Allometric parameters were used to establish the quotients of differentiation of every organ for each primate specimen. RESULTS There was a high differentiation in structure of the digestive organs among genera. Alouatta specimens clearly separated from the other genera based on dissimilarities in gastric, colonic, and rectal quotients, likely linked to the fermentation of plant contents. In contrast, all cebines (Sapajus, Cebus, and Saimiri) and Cacajao species had similar small intestine quotients, which is expected due to their high rates of animal matter consumed. CONCLUSIONS We show that diverse adaptations in digestive structure exist among frugivorous primates, which in turn reflect different dietary patterns within this group that may enable the geographic coexistence of different primate species.
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Affiliation(s)
- Anamélia de Souza Jesus
- Programa de Pós-Graduação em Saúde e Produção Animal na Amazônia, Universidade Federal Rural da Amazônia, Belém, Brazil
- Grupo de Pesquisa em Ecologia de Vertebrados Terrestres, Instituto de Desenvolvimento Sustentável Mamirauá, Tefé, Brazil
- Grupo de Pesquisa em Biologia e Conservação de Primatas, Instituto de Desenvolvimento Sustentável Mamirauá, Tefé, Brazil
- Rede de Pesquisa para Estudos sobre Diversidade, Conservação e Uso da Fauna na Amazônia (RedeFauna), Manaus, Brazil
| | - Hani R El Bizri
- Grupo de Pesquisa em Ecologia de Vertebrados Terrestres, Instituto de Desenvolvimento Sustentável Mamirauá, Tefé, Brazil
- Rede de Pesquisa para Estudos sobre Diversidade, Conservação e Uso da Fauna na Amazônia (RedeFauna), Manaus, Brazil
- School of Science, Engineering and Environment, University of Salford, Salford, UK
- Comunidad de Manejo de Fauna Silvestre en la Amazonía y en Latinoamérica (ComFauna), Iquitos, Peru
| | - Julia E Fa
- Department of Natural Sciences, School of Science and the Environment, Manchester Metropolitan University, Manchester, UK
- CIFOR Headquarters, Center for International Forestry Research (CIFOR), Bogor, Indonesia
| | - João Valsecchi
- Grupo de Pesquisa em Ecologia de Vertebrados Terrestres, Instituto de Desenvolvimento Sustentável Mamirauá, Tefé, Brazil
- Rede de Pesquisa para Estudos sobre Diversidade, Conservação e Uso da Fauna na Amazônia (RedeFauna), Manaus, Brazil
| | - Rafael Magalhães Rabelo
- Grupo de Pesquisa em Ecologia de Vertebrados Terrestres, Instituto de Desenvolvimento Sustentável Mamirauá, Tefé, Brazil
| | - Pedro Mayor
- Programa de Pós-Graduação em Saúde e Produção Animal na Amazônia, Universidade Federal Rural da Amazônia, Belém, Brazil
- Comunidad de Manejo de Fauna Silvestre en la Amazonía y en Latinoamérica (ComFauna), Iquitos, Peru
- Departamento Sanitat i Anatomia Animals, Universitat Autònoma de Barcelona, Barcelona, Spain
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Estellés-Domingo I, López-López P. Non-Invasive Sex Determination of Nestlings and Adult Bonelli's Eagles Using Morphometrics. Animals (Basel) 2023; 13:ani13071201. [PMID: 37048457 PMCID: PMC10093107 DOI: 10.3390/ani13071201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/19/2023] [Accepted: 03/29/2023] [Indexed: 04/14/2023] Open
Abstract
Biometric analysis allows the sexing of most vertebrates, particularly birds. Birds of prey, and, especially, the Bonelli's eagle (Aquila fasciata), show reverse sexual dimorphism (i.e., females are usually larger than males). In contrast to blood sampling, the use of morphometrics allows sex determination using a non-invasive method, and, therefore, it facilitates fieldwork. By means of a linear discriminant analysis of biometric variables, we obtained different equations that allow the sexing of nestlings and adult Bonelli's eagles. We sampled 137 Bonelli's eagles, 82 nestlings and 55 adults in eastern Spain during the period 2015-2022. The sexes obtained after linear discriminant analysis were compared with their molecular sexing. The validation procedure of the linear discriminant equations facilitated the reduction of the number of variables used and, consequently, optimised working time and sexing accuracy. After validation, some equations showed a 100% sexing efficiency for Bonelli's eagles, particularly for adults. Our results showed that the variables with smaller overlap between the sexes were the lateral tarsus length and dorso-ventral tarsus length, particularly in nestlings. The rest of the variables showed some overlap between the sexes in both age classes. The results we obtained enable the sexing of juvenile and adult Bonelli's eagles in the field using just these two measurements. Hence, this is an easy, accurate, quick and non-invasive method with multiple applications, including in studies on population dynamics, survival analysis or extinction risk assessments, which, ultimately, could contribute to the improvement of the conservation status of this endangered species.
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Affiliation(s)
- Irene Estellés-Domingo
- Movement Ecology Lab, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, C/Catedrático José Beltrán 2, E-46980 Paterna, Valencia, Spain
| | - Pascual López-López
- Movement Ecology Lab, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, C/Catedrático José Beltrán 2, E-46980 Paterna, Valencia, Spain
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Plucińska R, Jędrzejewski K, Malinowska U, Rogala J. Leveraging Multiple Distinct EEG Training Sessions for Improvement of Spectral-Based Biometric Verification Results. Sensors (Basel) 2023; 23:2057. [PMID: 36850654 PMCID: PMC9963573 DOI: 10.3390/s23042057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Most studies on EEG-based biometry recognition report results based on signal databases, with a limited number of recorded EEG sessions using the same single EEG recording for both training and testing a proposed model. However, the EEG signal is highly vulnerable to interferences, electrode placement, and temporary conditions, which can lead to overestimated assessments of the considered methods. Our study examined how different numbers of distinct recording sessions used as training sessions would affect EEG-based verification. We analyzed the original data from 29 participants with 20 distinct recorded sessions each, as well as 23 additional impostors with only one session each. We applied raw coefficients of power spectral density estimate, and the coefficients of power spectral density estimate converted to the decibel scale, as the input to a shallow neural network. Our study showed that the variance introduced by multiple recording sessions affects sensitivity. We also showed that increasing the number of sessions above eight did not improve the results under our conditions. For 15 training sessions, the achieved accuracy was 96.7 ± 4.2%, and for eight training sessions and 12 test sessions, it was 94.9 ± 4.6%. For 15 training sessions, the rate of successful impostor attacks over all attack attempts was 3.1 ± 2.2%, but this number was not significantly different from using six recording sessions for training. Our findings indicate the need to include data from multiple recording sessions in EEG-based recognition for training, and that increasing the number of test sessions did not significantly affect the obtained results. Although the presented results are for the resting-state, they may serve as a baseline for other paradigms.
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Affiliation(s)
- Renata Plucińska
- Institute of Electronic Systems, Faculty of Electronics and Information Technology, Warsaw University of Technology, 00-665 Warsaw, Poland
| | - Konrad Jędrzejewski
- Institute of Electronic Systems, Faculty of Electronics and Information Technology, Warsaw University of Technology, 00-665 Warsaw, Poland
| | - Urszula Malinowska
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, 02-093 Warsaw, Poland
| | - Jacek Rogala
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, 02-093 Warsaw, Poland
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Fiolka J, Bernacki K, Farah A, Popowicz A. Multi-Wavelength Biometric Acquisition System Utilizing Finger Vasculature NIR Imaging. Sensors (Basel) 2023; 23:1981. [PMID: 36850577 PMCID: PMC9962154 DOI: 10.3390/s23041981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/31/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Personal identification using analysis of the internal and external characteristics of the human finger is currently an intensively developed topic. The work in this field concerns new methods of feature extraction and image analysis, mainly using modern artificial intelligence algorithms. However, the quality of the data and the way in which it is obtained determines equally the effectiveness of identification. In this article, we present a novel device for extracting vision data from the internal as well as external structures of the human finger. We use spatially selective backlight consisting of NIR diodes of three wavelengths. The fast image acquisition allows for insight into the pulse waveform. Thanks to the external illuminator, images of the skin folds of the finger are acquired as well. This rich collection of images is expected to significantly enhance identification capabilities using existing and future classic and AI-based computer vision techniques. Sample data from our device, before and after data processing, have been shared in a publicly available database.
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Affiliation(s)
- Jerzy Fiolka
- Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Krzysztof Bernacki
- Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Alejandro Farah
- Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Mexico City 04510, Mexico
| | - Adam Popowicz
- Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
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Tuncer Orhan F, Gursoy HH. A Proposed Method for Estimating Refractive Error in Primary School Children. Cureus 2023; 15:e34554. [PMID: 36879692 PMCID: PMC9985458 DOI: 10.7759/cureus.34554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Background This study aimed to evaluate consecutive measurements of biometric parameters, age, and refraction in a cohort of Turkish primary school-age children and to assess the correlation between biometric changes and refraction. Methodology The study population was seven and 12-year-old children (n = 197). The retrieved data consisted of three consecutive measurements with a one-year interval for each subject. Data from one eye (right) were used. Age, gender, body mass index, spherical equivalent (SE), axial length (AL), anterior chamber depth (ACD), central corneal thickness (CCT), keratometry (K), and lens thickness (LT) were analyzed. The onset and final data were retrieved from the database in 2013 and 2016, respectively. Statistically, logistic and Cox regression models of all parameters were analyzed, and the significance level was set at 5%. Results The median of the onset and final SE values were -0.00 D (0.00-0.00) and 0.50 D (0.19-1.00), respectively. The onset AL (hazard ratio (HR) = 5.82, 95% confidence interval (CI) = 3.45-9.76, β = 1.76, p < 0.001), Kmean (HR = 2.28, 95% CI = 1.67-3.11, β = 0.82, p < 0.001), and age (HR = 0.77, 95% CI = 0.59-0.99, β = -0.26, p = 0.046) were correlated with myopia progression. To calculate the estimated SE, the onset data were included in the logistic regression model. The onset SE (β = 0.916, p < 0.001), AL (β = -0.451, p < 0.001), ACD (β = 0.430, p = 0.005), and K (β = -0.172, p < 0.001) were correlated with the mean final SE. An equation was generated using the regression model analysis. Conclusions The onset parameters of SE, AL, ACD, and K were confirmed to correlate with the final SE values in the proposed model. To confirm the use of the refractive calculator, a cross-validation analysis is needed to estimate three-year subsequent refractive error among seven and 12-year-old children.
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Sciuto K, Wolf MA, Sfriso A, Brancaleoni L, Iberite M, Iamonico D. Molecular and Morphometric Update on Italian Salicornia (Chenopodiaceae), with a Focus on the Species S. procumbens s. l. Plants (Basel) 2023; 12:375. [PMID: 36679088 PMCID: PMC9860865 DOI: 10.3390/plants12020375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Salicornia is a highly taxonomically problematic genus due to the reduced morphological observable characters. Ten Eurasian species are currently recognized: S. alpini, S. europaea, S. fruticosa, S. hispanica, S. lagascae, S. perennans, S. perennis, S. persica, S. procumbens, and S. pruinosa. In addition, eleven subspecies are accepted, mainly based on their distribution areas. Along the Venetian coasts and in Sardinia, in the past, an endemic species called S. veneta was recognized, but this name was later synonymized with S. procumbens subsp. procumbens. The aim of the present research is investigating different Italian Salicornia populations by a molecular point of view, using the nuclear ribosomal external transcribed spacer ETS and the plastid psbA-trnH intergenic spacer. A particular focus is on the comparison between Venetian (including those occurring in locus classicus of S. veneta) and Sardinian S. procumbens and other Italian populations of this species. The molecular analyses based on the plastid marker highlight that the Italian S. procumbens populations form two well distinct groups. In particular, some of the Venetian (Locus classicus of S. veneta) and all the Sardinian specimens are genetically distinct (=plastid haplotype 1) from the other investigated populations (=plastid haplotype 2). This indicates that the psbA-trnH haplotype 1 glassworts represent a distinct entity, which we suppose to coincide with the former S. veneta. Therefore, we suggest to recognize this taxonomic entity at the subspecies rank, as S. procumbens subsp. veneta comb. and stat. nov. However, contrary to the results found with the plastid psbA-trnH intergenic spacer, the ETS locus does not show a separation into two distinct clades for S. procumbens, probably due to a different evolution of the two loci. Nevertheless, in the ETS phylogenetic reconstruction, the Sardinian specimens (=ribotypes 2 and 3) are placed, together with a Moroccan sample, in a subclade separated from all the other S. procumbens. These results suggest that the Sardinian populations can represent a subspecies/incipient speciation process, probably due to geographic isolation. In the light of this, morphometric analyses (k-means, MANOVA, PCA, DA, and Box-Plot) have been carried out on the Sardinian and Venetian populations to verify if this distinction is detectable also by a morphological point of view. The morphometric analyses highlight the existence of two groups, concerning both the nuclear and plastid trees. Six characters were found to be diagnostic.
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Affiliation(s)
- Katia Sciuto
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Marion A. Wolf
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Adriano Sfriso
- Department of Environmental Sciences, Informatics and Statistics, Ca’Foscari University of Venice, Via Torino 155, 30172 Mestre, Italy
| | - Lisa Brancaleoni
- Department of Environment and Prevention Sciences, University of Ferrara, C.so Ercole I D’Este 32, 44121 Ferrara, Italy
| | - Mauro Iberite
- Department of Environmental Biology, Sapienza University of Rome, P.le A. Moro 5, 00185 Roma, Italy
| | - Duilio Iamonico
- Ce.R.S.I.Te.S., Sapienza University of Rome, Via XXIV Maggio 7, 04100 Latina, Italy
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Belov DF, Nikolaenko VP, Nizametdinova YS. [Reasonability of accounting for gender in intraocular lens power calculation]. Vestn Oftalmol 2023; 139:68-72. [PMID: 37942599 DOI: 10.17116/oftalma202313905168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
PURPOSE The study assesses the influence of gender on the accuracy of intraocular lens (IOL) power calculation by formulas SRK/T, Barrett Universal II (BUII), Ladas super formula (LSF), Hill RBF (RBF) and Kane. MATERIAL AND METHODS The study enrolled 214 patients (106 men and 108 women) who underwent cataract phacoemulsification (PE). Optical biometry was performed on IOL-Master 500. IOL power calculation was performed either adjusting for gender (formulas SRK/T, BUII, LSF) or without such adjustment (formulas RBF, Kane). Calculation error (CE) was assessed one month after PE by comparing the achieved (autorefractometer Topcon-8800) and target spherical equivalent of refraction. RESULTS Significant differences were found in mean IOL CE with gender-unspecific formulas (SRK/T, BUII, LSF) and no differences in gender-specific calculators (RBF, Kane). The Kane formula demonstrated the lowest CE between men and women (-0.01±0.43 versus -0.09±0.41 D; p=0.158), while the SRK/T formula had the highest CE (0.02±0.46 versus -0.21±0.44 D, respectively; p<0.001). Presence of a significant correlation between CE and gender was found for all formulas except Kane (R2=0.005, p=0.158). CONCLUSION Patient's gender has a significant impact on IOL calculation accuracy. Using gender-responsive formulas could help achieve better refractive results with PE. The present study showed Kane formula to have the least CE dependence from gender. However, the CE difference (less than 0.25 D) was lower than the value of division (0.5D) in modern IOL models.
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Affiliation(s)
- D F Belov
- Saint Petersburg Multifield Hospital No. 2, Saint Petersburg, Russia
| | - V P Nikolaenko
- Saint Petersburg Multifield Hospital No. 2, Saint Petersburg, Russia
- Saint Petersburg State University, Saint Petersburg, Russia
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Brawley AM, Schaefer EW, Lucarelli E, Ural SH, Chuang CH, Hwang W, Paul IM, Daymont C. Differing prevalence of microcephaly and macrocephaly in male and female fetuses. Front Glob Womens Health 2023; 4:1080175. [PMID: 36911049 PMCID: PMC9998507 DOI: 10.3389/fgwh.2023.1080175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 02/01/2023] [Indexed: 03/14/2023] Open
Abstract
Objective To compare the proportion of female and male fetuses classified as microcephalic (head circumference [HC] < 3rd percentile) and macrocephalic (>97th percentile) by commonly used sex-neutral growth curves. Methods For fetuses evaluated at a single center, we retrospectively determined the percentile of the first fetal HC measurement between 16 and 0/7 and 21-6/7 weeks using the Hadlock, Intergrowth-21st, and NICHD growth curves. The association between sex and the likelihood of being classified as microcephalic or macrocephalic was evaluated with logistic regression. Results Female fetuses (n = 3,006) were more likely than male fetuses (n = 3,186) to be classified as microcephalic using the Hadlock (0.4% male, 1.4% female; odds ratio female vs. male 3.7, 95% CI [1.9, 7.0], p < 0.001), Intergrowth-21st (0.5% male, 1.6% female; odds ratio female vs. male 3.4, 95% CI [1.9, 6.1], p < 0.001), and NICHD (0.3% male, 1.6% female; odds ratio female vs. male 5.6, 95% CI [2.7, 11.5], p < 0.001) curves. Male fetuses were more likely than female fetuses to be classified as macrocephalic using the Intergrowth-21st (6.0% male, 1.5% female; odds ratio male vs. female 4.3, 95% CI [3.1, 6.0], p < 0.001) and NICHD (4.7% male, 1.0% female; odds ratio male vs. female 5.1, 95% CI [3.4, 7.6], p < 0.001) curves. Very low proportions of fetuses were classified as macrocephalic using the Hadlock curves (0.2% male, < 0.1% female; odds ratio male vs. female 6.6, 95% CI [0.8, 52.6]). Conclusion Female fetuses were more likely to be classified as microcephalic, and male fetuses were more likely to be classified as macrocephalic. Sex-specific fetal head circumference growth curves could improve interpretation of fetal head circumference measurements, potentially decreasing over- and under-diagnosis of microcephaly and macrocephaly based on sex, therefore improving guidance for clinical decisions. Additionally, the overall prevalence of atypical head size varied using three growth curves, with the NICHD and Intergrowth-21st curves fitting our population better than the Hadlock curves. The choice of fetal head circumference growth curves may substantially impact clinical care.
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Affiliation(s)
- Amalia M Brawley
- Department of Obstetrics and Gynecology, Penn State College of Medicine, Hershey, PA, United States
| | - Eric W Schaefer
- Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, United States
| | - Elizabeth Lucarelli
- Department of Obstetrics and Gynecology, Penn State College of Medicine, Hershey, PA, United States
| | - Serdar H Ural
- Department of Obstetrics and Gynecology, Penn State College of Medicine, Hershey, PA, United States
| | - Cynthia H Chuang
- Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, United States.,Department of Medicine, Penn State College of Medicine, Hershey, PA, United States
| | - Wenke Hwang
- Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, United States
| | - Ian M Paul
- Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, United States.,Department of Pediatrics, Penn State College of Medicine, Hershey, PA, United States
| | - Carrie Daymont
- Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, United States.,Department of Pediatrics, Penn State College of Medicine, Hershey, PA, United States
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Xirou V, Xirou T, Siganos C, Ntonti P, Georgakopoulos C, Stavrakas P, Makri OE, Kanakis M, Tsapardoni F, Fragkoulis I, Garnavou-Xirou C, Kozobolis V. Impact of Cataract Surgery on IOP and Ocular Structures in Normotensive Patients and Primary and Exfoliation Open-Angle Glaucoma Patients. Clin Ophthalmol 2023; 17:1047-1055. [PMID: 37041963 PMCID: PMC10083030 DOI: 10.2147/opth.s402550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/28/2023] [Indexed: 04/13/2023] Open
Abstract
Purpose The aim of this study was to evaluate and compare the changes in Intraocular Pressure (IOP) and other ocular parameters: the Anterior Chamber Angle (ACA), Anterior Chamber Volume (ACV), and Anterior Chamber Depth (ACD) during phacoemulsification surgery in Greek patients with normotensive eyes and those with well-controlled Open-Angle Glaucoma (OAG). Additionally, parameters such as the Corneal Thickness (CCT), Axial Length (AL), Central Macular Thickness (CMT), and Retinal Nerve Fibre Layer (RNFL) were also examined. Patients and Methods This was a prospective observational case-control study that included 50 phakic eyes, 25 normotensive (Group 1), and 25 with OAG: 15 Primary Open-Angle Glaucoma (POAG) and 10 Exfoliation Glaucoma (EXG) (Group 2). Ophthalmic assessment included IOP measurements, ocular biometry, and anterior and posterior segment optical coherence tomography evaluation of the aforementioned ocular parameters, prior and 6 months after phacoemulsification surgery. Results At the 6 months post-operative review, a greater IOP reduction was recorded in eyes with OAG, in comparison to normotensive ones (5.3mmHg and 1.6 mmHg respectively). In addition, a significant but similar increase was recorded in the values of the ACA, ACV, and ACD of both groups between the pre- and the post-op period. Furthermore, the CCT and AL values remained unaltered. Finally, there was a non-statistically significant change in the mean CMT and the mean average RNFL of both groups. Conclusion Eyes with OAG tend to undergo a greater reduction in IOP post-phacoemulsification surgery, in comparison to normotensive eyes. This reduction may not be solely attributed to ocular anatomical changes after phacoemulsification surgery but may also be due to the remodeling of the trabecular meshwork and the ciliary body. This may be especially true in the case of OAG eyes, which already start off with a compromised trabecular endothelium prior to surgery.
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Affiliation(s)
- Vasiliki Xirou
- Ophthalmology Department, Hellenic Red Cross Hospital of Athens, Athens, Greece
- Correspondence: Vasiliki Xirou, Ophthalmology Department, Hellenic Red Cross Hospital of Athens, Athens, Greece, Email
| | - Tina Xirou
- Ophthalmology Department, Hellenic Red Cross Hospital of Athens, Athens, Greece
| | - Charalambos Siganos
- Ophthalmology Department, University Hospital of Heraklion, Heraklion, Greece
| | - Panagiota Ntonti
- Ophthalmology Department, University Hospital of Alexandroupolis, Alexandroupolis, Greece
| | | | | | - Olga E Makri
- Ophthalmology Department, University Hospital of Patras, Patras, Greece
| | - Menelaos Kanakis
- Ophthalmology Department, University Hospital of Patras, Patras, Greece
| | | | | | | | - Vassilios Kozobolis
- Ophthalmology Department, University Hospital of Alexandroupolis, Alexandroupolis, Greece
- Ophthalmology Department, University Hospital of Patras, Patras, Greece
- Eye Institute of Thrace, Democritus University of Thrace, Alexandroupolis, Greece
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Naz Şimdivar GH, Kurumoğlu Incekalan T, Tuncel DA. Ocular biometry, anterior chamber morphometry, and their relationship with serum ferritin levels in children with beta thalassemia major. Ther Adv Ophthalmol 2023; 15:25158414231165824. [PMID: 37113304 PMCID: PMC10126650 DOI: 10.1177/25158414231165824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 03/03/2023] [Indexed: 04/29/2023] Open
Abstract
Background Ocular biometry and anterior segment evaluations are important to determine ocular development and pathological changes, especially in thalassemia patients in Mediterranean countries such as Turkey. Objectives The objectives of this study were to compare ocular biometry and anterior segment parameters in children with thalassemia major and healthy controls and to examine the relationship between ferritin levels, anthropometric measurements, and ocular parameters. Design This is a prospective case-control study. Methods The height, weight, body mass index, and occipitofrontal circumference values of the participants were recorded. Anterior and vitreous chamber depth, lens thickness, axial length, central corneal thickness, anterior chamber volume, iridocorneal angle, pupil diameter, and mean keratometry were measured. Measurements were compared between patients and healthy children, and between patients with ferritin levels above and below 1000 ng/mL. Results This study included 40 patients and 45 controls. Height, weight, and body mass index were significantly lower while ferritin level and occipitofrontal circumference were significantly higher in patients compared with the controls (p < 0.001 for all). There were no statistically significant differences in the other ocular parameters (p > 0.05). In comparisons between patients with ferritin levels below (n = 15) and above 1000 ng/mL (n = 25), there were no significant differences in age, height, weight, body mass index, occipitofrontal circumference, or ocular parameters (p > 0.05). Occipitofrontal circumference and mean keratometry value were positively correlated in patients with ferritin levels below 1000 ng/mL (r = 0.573, p = 0.025), while body mass index was negatively correlated with pupil diameter in patients with ferritin levels above 1000 ng/mL (r = -0.469, p = 0.018). Conclusion Children with thalassemia showed significant growth retardation and large occipitofrontal circumference but did not differ from controls in terms of biometrics and anterior segment morphology. Our results demonstrated a positive correlation between the occipitofrontal circumference and mean keratometry value in children with ferritin levels below 1000 ng/mL and a negative correlation between body mass index and pupil diameter in children with ferritin levels above 1000 ng/mL.
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Affiliation(s)
| | | | - Defne Ay Tuncel
- Department of Pediatric Hematology, Adana City
Training and Research Hospital, Adana, Turkey
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Atkova EL, Yartsev VD, Ekaterinchev MA, Shkolyarenko NY. [Biometric characteristics of the lacrimal passages in healthy individuals and in patients with nasolacrimal duct obstruction]. Vestn Oftalmol 2023; 139:20-26. [PMID: 37942593 DOI: 10.17116/oftalma202313905120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Despite an obvious interest in the processes occurring in the lacrimal passages in their obstruction, there is few articles analyzing their biometric parameters. PURPOSE The study investigates the biometric characteristics of the lacrimal passages in healthy individuals and in patients with nasolacrimal duct obstruction. MATERIAL AND METHODS The study included 81 cases of partial nasolacrimal duct obstruction and 38 cases without tear drainage insufficiency. All patients underwent computed tomography with dacryocystography. Analysis of the biometric parameters involved calculation of the length, volume, and average sectional area of the nasolacrimal duct and the nasolacrimal bony canal. The ratio R4/16l was calculated (where R is the radius of the nasolacrimal duct; l is the length of the nasolacrimal duct). The normality of values was assessed using the Shapiro-Wilk test. Intergroup differences were assessed using the Mann-Whitney test and t-statistics for independent samples. Correlation analysis was performed according to the Spearman method. ROC analysis was carried out. Differences were considered significant at p≤0.05. RESULTS There were significant differences in the volume (p=0.004) and the average sectional area of the nasolacrimal duct (p=0.014), as well as in the length of the nasolacrimal canal (p=0.034). Relationships were established between the age of patients without tear drainage insufficiency and the length of the nasolacrimal canal (p=0.042); the length of the nasolacrimal canal and the volume of the nasolacrimal duct (p=0.034), as well as the volume of the nasolacrimal duct and the nasolacrimal canal in partial nasolacrimal duct obstruction (p=0.017). The AUC of the R4/16l ratio in the ROC analysis was 0.653 (p=0.007). CONCLUSION In addition to the obvious differences, it was found that the length of the nasolacrimal bony canal significantly differed in the subjects of both study groups. We considered the tear ducts as a hydrodynamic system obeying Poiseuille's law, so we calculated the ratio R4/16l. The value of this ratio varied (p=0.016), and the ROC analysis showed high sensitivity and specificity of the criterion. This makes it possible to use this ratio as a diagnostic criterion for partial nasolacrimal duct obstruction.
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Affiliation(s)
- E L Atkova
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
| | - V D Yartsev
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
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Mechleb N, Debellemanière G, Gauvin M, Wallerstein A, Saad A, Gatinel D. Using the First-Eye Back-Calculated Effective Lens Position to Improve Refractive Outcome of the Second Eye. J Clin Med 2022; 12. [PMID: 36614985 DOI: 10.3390/jcm12010184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/10/2022] [Accepted: 12/23/2022] [Indexed: 12/28/2022] Open
Abstract
The present study is a retrospective, monocentric case series that aims to compare the second-eye IOL power calculation precision using the back-calculated lens position (LP) as a lens position predictor versus using a predetermined correction factor (CF) for thin- and thick-lens IOL calculation formulas. A set of 878 eyes from 439 patients implanted with Finevision IOLs (BVI PhysIOL, Liège, Belgium) with both operated eyes was used as a training set to create Haigis-LP and PEARL-LP formulas, using the back-calculated lens position of the contralateral eye as an effective lens position (ELP) predictor. Haigis-CF, Barrett-CF, and PEARL-CF formulas using an optimized correction factor based on the prediction error of the first eye were also designed. A different set of 1500 eyes from 1500 patients operated in the same center was used to compare the basal and enhanced formula performances. The IOL power calculation for the second eye was significantly enhanced by adapting the formulas using the back-calculated ELP of the first eye or by using a correction factor based on the prediction error of the first eye, the latter giving slightly higher precision. A decrease in the mean absolute error of 0.043D was observed between the basal PEARL and the PEARL-CF formula (p < 0.001). The optimal correction factor was close to 60% of the first-eye prediction error for every formula. A fixed correction factor of 60% of the postoperative refractive error of the first operated eye improves the second-eye refractive outcome better than the methods based on the first eye’s effective lens position back-calculation. A significant interocular biometric dissimilarity precludes the enhancement of the second-eye IOL power calculation according to the first-eye results.
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Lee D, Kim C, Lee K, Chung JK. Clinical Outcomes of Cataract Surgery in Patients with Sjögren's Syndrome. Diagnostics (Basel) 2022; 13:diagnostics13010057. [PMID: 36611349 PMCID: PMC9818369 DOI: 10.3390/diagnostics13010057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/22/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
This study compared the biometric accuracy and refractive outcomes, and ocular surface changes after cataract surgery in patients with Sjögren’s syndrome (SS, S group), non-SS dry eye patients (D group), and healthy controls (C group). The medical records of patients who underwent cataract surgery and met certain inclusion criteria were reviewed. In total, 167 eyes of 87 patients were enrolled. Refractive parameters were analyzed via optical biometry and combined ultrasound biometry and automated refractokeratometry. The mean absolute errors (MAEs), the uncorrected distance visual acuities (UDVAs), changes in the ocular staining score (OSS), and anterior chamber cell grades were compared for 12 months postoperatively. The S group evidenced more severe and persistent OSS exacerbation after cataract surgery; the OSS returned to baseline by 3 months postoperatively. The mean keratometric values showed a significant linear correlation. There was no significant intergroup difference in either the MAEs (p > 0.530) or anterior chamber inflammation (p > 0.436). The postoperative UDVA of the S group was poorer than that of the C group from 3 months postoperatively (p < 0.047) but not different from that of the D group (p > 0.311). With preoperative ocular surface optimization and optimal postoperative treatment of superficial keratitis, the refractive outcomes of SS patients were comparable to those of other groups and the postoperative UDVA was not inferior to that of non-SS dry eye patients.
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Affiliation(s)
| | | | | | - Jin Kwon Chung
- Correspondence: ; Tel.: +82-2-709-9354; Fax: +82-2-710-3196
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Sikorski BL, Hoffer KJ. Split-Window OCT biometry in pseudophakic eyes. Acta Ophthalmol 2022; 100:e1685-e1690. [PMID: 35670319 PMCID: PMC9796642 DOI: 10.1111/aos.15198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 05/24/2022] [Indexed: 01/01/2023]
Abstract
PURPOSE To determine the utility of Split-Window optical coherence tomography OCT (SW-OCT) biometry in measuring ocular axial dimensions as well as imaging the intraocular lens (IOL) and posterior capsule in pseudophakic eyes. METHODS Sixty-nine pseudophakic eyes of 69 subjects were enrolled in the study. The results of SW-OCT biometry implemented in the SD OCT device for posterior and anterior segment imaging (REVO NX, Optopol Technology) were compared with those obtained with the SS-OCT-based biometer IOLMaster 700 (Carl Zeiss Meditec). Differences in measurement values between the two biometers were determined using the paired t-test. Agreement was assessed through intraclass correlation coefficients (ICC) and Bland-Altman plots. RESULTS The correlation between measurements obtained with SW-OCT and SS-OCT was very high (ICC for: axial length (AL) = 1.000; anterior chamber depth (ACD) = 0.997; IOL thickness (IOL LT) = 0.997; central corneal thickness (CCT) = 0.987). The mean AL measurement difference was 0.003 ± 0.021 mm (the 95% LoA ranged from -0.04 to 0.05); the mean ACD difference was -0.009 ± 0.025 mm (95% LoA, -0.06 to 0.04); mean LT difference was 0.001 ± 0.021 mm (95% LoA, -0.04 to 0.04); and mean CCT difference was 1.4 ± 5.4 μm (95% LoA, -9 to 12). CONCLUSION The study shows small, non-significant differences between the biometric measurements obtained with REVO NX SW-OCT and IOLMaster 700 SS-OCT in pseudophakic eyes. However, SW-OCT offered significantly lower ACD and LT measurement failure rates. With high-resolution imaging, SW-OCT enables accurate assessment of IOL position relative to the posterior capsule and visualization of capsular fibrosis.
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Affiliation(s)
| | - Kenneth J. Hoffer
- Clinical Professor of OphthalmologyUniversity of California, Los AngelesStein Eye InstituteLos AngelesCaliforniaUSA,St. Mary's Eye CenterSanta MonicaCaliforniaUSA
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Martínez-Plaza E, Molina-Martín A, Arias-Puente A, Piñero DP. Clinical Validation of a New Optical Biometer for Myopia Control in a Healthy Pediatric Population. Children (Basel) 2022; 9. [PMID: 36360441 DOI: 10.3390/children9111713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/06/2022] [Accepted: 11/07/2022] [Indexed: 11/10/2022]
Abstract
To assess the clinical validation of the Myah device in a pediatric population by evaluating the repeatability of biometric evaluations and analyzing its agreement with the Myopia Master system. A total of 51 children (51 eyes) were enrolled. Repeated measurements of flat (K1) and steep (K2) corneal radius, white-to-white (WTW) distance and axial length (AL) were performed with the Myah device. The same parameters were obtained from a subgroup (30 eyes) with the Myopia Master for the agreement analysis. The repeatability was assessed using the intrasubject standard deviation (Sw) and the intraclass correlation coefficient (ICC). The agreement was analyzed using the Bland−Altman method and the paired Student t-test. The Sw was 0.018 D, 0.021 D, 0.071 mm and 0.017 mm for K1, K2, WTW and AL, respectively (ICC ≥ 0.971). The mean difference and limits of agreement when comparing instruments were −0.013 (−0.102/0.077) for K1 (p = 0.16), −0.058 (−0.127/0.012) for K2 (p < 0.001), 0.151 (−0.370/0.673) for WTW (p < 0.001) and 0.030 (−0.091/0.151) for AL (p = 0.009). In conclusion, the Myah device provides consistent measurements of corneal radius, WTW distance and AL in a healthy pediatric population, validating their usefulness in clinical practice. These measurements could be used interchangeably with those provided by the Myopia Master device, although with some caution.
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Kralikova I, Babusiak B, Smondrk M. EEG-Based Person Identification during Escalating Cognitive Load. Sensors (Basel) 2022; 22:7154. [PMID: 36236268 PMCID: PMC9572021 DOI: 10.3390/s22197154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/16/2022] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
With the development of human society, there is an increasing importance for reliable person identification and authentication to protect a person's material and intellectual property. Person identification based on brain signals has captured substantial attention in recent years. These signals are characterized by original patterns for a specific person and are capable of providing security and privacy of an individual in biometric identification. This study presents a biometric identification method based on a novel paradigm with accrual cognitive brain load from relaxing with eyes closed to the end of a serious game, which includes three levels with increasing difficulty. The used database contains EEG data from 21 different subjects. Specific patterns of EEG signals are recognized in the time domain and classified using a 1D Convolutional Neural Network proposed in the MATLAB environment. The ability of person identification based on individual tasks corresponding to a given degree of load and their fusion are examined by 5-fold cross-validation. Final accuracies of more than 99% and 98% were achieved for individual tasks and task fusion, respectively. The reduction of EEG channels is also investigated. The results imply that this approach is suitable to real applications.
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Said RB, Farah C, Chanbour W, Jarade E. Cataract in keratoconus: Six-month results and a comparison of standard intraocular lens power calculation formulas. Saudi J Ophthalmol 2022; 36:201-206. [PMID: 36211317 PMCID: PMC9535916 DOI: 10.4103/sjopt.sjopt_184_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/21/2021] [Accepted: 02/20/2022] [Indexed: 11/04/2022] Open
Abstract
PURPOSE To report the results of cataract surgeries in keratoconus patients at 1 and 6 months postoperatively, and to compare the standard intraocular lens (IOL) calculation formulas in this population. METHODS This is a retrospective study, carried out in 44 eyes of 26 patients known to have keratoconus who underwent cataract surgery at Beirut Eye and ENT Specialist Hospital between 2010 and 2021. The patients were divided into groups based on Dr Jarade updated algorithm. Visual acuities before and after cataract surgery, at 1 and 6 months were recorded, as well as spherical equivalent. The difference between the expected spherical equivalent with each formula was subtracted from the actual resultant refraction, and its absolute value deduced. The means of the values were calculated and the 4 standard formulas (SRK/T, SRK/II, Holladay, and Hoffer Q) were compared. RESULTS Six eyes had similar topographic and manifest axes (category 1) and underwent toric IOL implantation. Corrected distance visual acuity (CDVA) at 1 and 6 months was 0.2 and 0.1 logMAR, respectively. 26 eyes had mismatching axes and had monofocal IOL placement. CDVA at 1 and 6 months was 0.3. Six eyes required intrastromal corneal ring placement before operating (category 3). CDVA was 0.3 and 0.2 at 1 and 6 months, respectively. Regarding category 4, requiring keratoplasty and cataract extraction, CDVA was 0.4 at both follow-ups. No statistically significant difference was found between the different formulas. CONCLUSION Categorization of keratoconus patients gave favorable results after cataract surgery. No superior IOL formula was found.
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Affiliation(s)
- Reeda B. Said
- Department of Ophthalmology, Faculty of Medicine, Lebanese University, Beirut, Lebanon,Department of Ophthalmology, Beirut Eye and ENT Specialist Hospital, Beirut, Lebanon
| | - Chahid Farah
- Department of Ophthalmology, Faculty of Medicine, Lebanese University, Beirut, Lebanon,Department of Ophthalmology, Beirut Eye and ENT Specialist Hospital, Beirut, Lebanon
| | - Wassef Chanbour
- Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Elias Jarade
- Department of Ophthalmology, Faculty of Medicine, Lebanese University, Beirut, Lebanon,Department of Ophthalmology, Beirut Eye and ENT Specialist Hospital, Beirut, Lebanon,Mediclinic Dubai Mall, Dubai, United Arab Emirates,Address for correspondence: Dr. Elias Jarade, Beirut Eye Specialist Hospital, Al-Mathaf Square, P. O. Box 116-5311, Beirut, Lebanon. E-mail:
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