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Antonov AA, Khderi K, Bersunkayev MK, Pateyuk LS. [The effect of phacoemulsification of age-related cataract on intraocular pressure and iridocorneal angle parameters in primary open-angle glaucoma]. Vestn Oftalmol 2023; 139:60-68. [PMID: 38235631 DOI: 10.17116/oftalma202313906160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Cataract phacoemulsification with intraocular lens implantation significantly affects the morphology of the anterior chamber angle (ACA) and contributes to a reduction of intraocular pressure (IOP). PURPOSE This study investigates the changes in anterior chamber angle configuration and IOP level before and after cataract surgery in primary open-angle glaucoma (POAG) eyes, and assesses its possible relationship with the axial length of the eye. MATERIAL AND METHODS The study included 38 patients with immature senile cataract and compensated unoperated stage I-II POAG. Patients underwent anterior segment optical coherence tomography (AS-OCT) with measurement of the angle opening distance (AOD750) and trabecular-iris space area (TISA750) before and six weeks after the surgery, as well as axial length and corneal-compensated IOP (IOPcc). RESULTS After the surgery 92.11% of patients showed a decrease in IOPcc an average of 1.84±1.95 mm Hg (by 12.33±10.21% of the baseline); the maximum decrease in the IOPcc level was 8.35 mm Hg (by 40.97% of the baseline). AS-OCT data indicates that cataract phacoemulsification causes an increase in anterior chamber angle width: AOD750 increased from 0.510±0.175 to 0.771±0.156 mm, and TISA750 increased from 0.266±0.090 to 0.494±0.096 mm2. The strongest correlations were found between the axial length, postoperative TISA750 increase (Δ%TISA750) and postoperative IOPcc reduction (Δ% IOPcc). Postoperatively, specific changes could be observed in the trabecular meshwork in 28.95% of cases in the form of elongation and strain of the membrane. CONCLUSIONS Cataract extraction contributes to a significant reduction in IOP due to anterior chamber angle expansion, trabecular meshwork stretching, and improved aqueous outflow.
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Affiliation(s)
- A A Antonov
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
| | - Kh Khderi
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
| | | | - L S Pateyuk
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
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Kumarakulasinghe ALB, Md Din N, Mohd Noh UK, Syed Zakaria SZ, Aung T, Mohd Khialdin S. Evaluation of Ocular Biometric and Optical Coherence Tomography Parameters in Preterm Children Without Retinopathy of Prematurity. Transl Vis Sci Technol 2022; 11:8. [PMID: 35258558 PMCID: PMC8914564 DOI: 10.1167/tvst.11.3.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Purpose To evaluate and compare biometric and optical coherence tomography parameters of ocular structures in preterm children without retinopathy of prematurity with term children. Methods A cross-sectional, comparative study was carried out from 2018 to 2019. In this study, 124 eyes of 62 preterm children were compared with 132 eyes of 66 term children aged between 7 and 9 years. Preterm children were born at 28 to 32 weeks with a birth weight of less than 2 kg with no ocular abnormalities, and term children were delivered at 37 or greater weeks and had a birth weight of 2 kg or more. All children had standardized eye examinations, and ocular measurements using the anterior and posterior segment optical coherence tomography and laser interferometry. Results Significant differences were found between the term and preterm children for horizontal corneal diameter: median, 12.2 mm (interquartile range [IQR], 0.4) versus median, 12.1 mm (IQR, 0.6; P < 0.005); axial length median, 23.03 mm (IQR, 1.10 mm) versus median, 22.88 mm (IQR, 1.35 mm; P = 0.017); global retinal nerve fiber layer thickness: mean ± standard deviation, 106.54 ± 10.23 µm versus mean ± standard deviation, 103.65 ± 10.178 µm (P = 0.024); temporal retinal nerve fiber layer thickness: median, 76 µm (IQR, 16 µm) vs median, 74 µm (IQR, 14 µm; P = 0.012); and the angle opening distance at 750 µm nasal: mean ± standard deviation, 0.815 ± 0.23 mm vs mean ± standard deviation, 0.749 ± 0.21 mm (P = 0.016). No significant differences were found for other anterior segment and angle parameters. Conclusions Preterm children with no retinopathy of prematurity have smaller eyes and thinner retinal nerve fiber layers than their term counterparts. The long-term effects of interrupted ocular growth in preterm children should be further studied into adulthood. Translational Relevance Preterm children maybe more predisposed to certain eye conditions because they have smaller eyes, and thus should be further monitored clinically.
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Affiliation(s)
| | - Norshamsiah Md Din
- Department of Ophthalmology, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur, Malaysia
| | - Umi Kalthum Mohd Noh
- Department of Ophthalmology, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur, Malaysia.,Department of Ophthalmology, Sunway Medical Centre Jalan Lagoon Selatan, Bandar Sunway, Petaling Jaya, Selangor, Malaysia
| | - Syed Zulkifli Syed Zakaria
- Department of Paediatrics, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latiff, Bandar TunRazak, Cheras, Kuala Lumpur, Malaysia
| | - Tin Aung
- Singapore Eye Research Institute, Singapore National Eye Center, 11 Third Hospital Avenue, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Safinaz Mohd Khialdin
- Department of Ophthalmology, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur, Malaysia
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Rampersad N, Hansraj R. Distribution of anterior chamber angle measurements in South African young adults: an optical coherence tomography study. Int Ophthalmol 2022; 42:1697-1709. [PMID: 34984629 DOI: 10.1007/s10792-021-02164-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 12/18/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE Assessment of anterior chamber angle (ACA) variables is important to screen, diagnose and monitor ocular anomalies. Even though data on ACA variables, such as angle-opening distance taken at 500 µm (AOD500) and trabecular-iris angle (TIA), are available in the literature, limited information is available about these variables in African sub-populations. The purpose of this study is to describe the distribution of ACA measurements (AOD500 and TIA) in a South African young adult population. METHODS In this cross-sectional study, 700 young adults were recruited from a university student population using two-stage random sampling. The Optovue iVue 100 optical coherence tomographer was used to measure the ACA variables. The distribution of the AOD500 and TIA measurements was analysed using descriptive and inferential statistics. Data from only the right eyes were analysed because the ACA measurements in the two eyes showed high levels of interocular symmetry. RESULTS The measurements for the nasal and temporal ACAs were asymmetrically distributed (p < 0.001). The median AOD500 measurements in the nasal and temporal angles were 539 µm and 542 µm, respectively. The median TIA measurements were similar (~ 36°) in the two horizontal angles. The temporal ACA measurements were slightly higher than the nasal ACA measurements. Females had higher median ACA measurements than males (p ≥ 0.029). CONCLUSION The ACA measurements in South African young adults resemble non-Gaussian curves. The ACA measurements are different from that reported in other sub-populations worldwide and most participants had ACA measurements associated with non-occludable ACAs.
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Affiliation(s)
- Nishanee Rampersad
- Discipline of Optometry, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
| | - Rekha Hansraj
- Discipline of Optometry, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
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Measurement of Iris Thickness at Different Regions in Healthy Chinese Adults. J Ophthalmol 2021; 2021:2653564. [PMID: 34055394 PMCID: PMC8131156 DOI: 10.1155/2021/2653564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 04/28/2021] [Indexed: 11/17/2022] Open
Abstract
Purpose To study the variation of iris thicknesses in different regions and explore the possible correlations with age and gender. Methods Healthy Chinese adults were recruited; the anterior segment of their eyes was imaged by swept-source optical coherence tomography (SS-OCT). The horizontal scan of the right eye was selected, and the thicknesses of both the nasal and temporal irises were measured at 199 evenly spaced points. Results A total of 233 subjects with an average age of 36.79 ± 10.04 years (range 19 to 62) were included in the final analysis. The mean iris thicknesses of the temporal and nasal sides were 364.79 ± 47.58 μm and 372.44 ± 43.75 μm, respectively. The mean nasal iris thickness was positively correlated with age (β = 0.9 μm/year; P = 0.002), but the temporal one was not (β = 0.077 μm/year; P = 0.806). At 139 points of the nasal iris and 146 points of the temporal iris, the iris thickness was significantly correlated with age (P < 0.05). The thicknesses of the peripheral and pupillary parts were positively correlated with age, while the middle part was negatively correlated with age. No significant difference was observed in the mean iris thickness between genders (temporal: t = 1.597, P = 0.112; nasal: t = 1.870, P = 0.063), but females had a thicker iris than males at 50 points in the temporal side and 49 points in the nasal side (P < 0.05); no point in males was observed to have thicker iris compared to females. Conclusion Using SS-OCT and the novel method, thicknesses of the iris at different regions were measured. The thicknesses of the peripheral and pupillary irises increase with age, while the thicknesses of the middle part decrease.
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Monsálvez-Romín D, Del Águila-Carrasco A, Ferrer-Blasco T, Esteve-Taboada JJ, Montés-Micó R. Evaluation of the iridocorneal angle with accommodation using optical coherence tomography. Int J Ophthalmol 2017; 10:1614-1616. [PMID: 29062784 DOI: 10.18240/ijo.2017.10.21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 07/19/2017] [Indexed: 11/23/2022] Open
Abstract
The changes in the iridocorneal angle structure during accommodation are assessed by means of anterior segment optical coherence tomography. Thirteen right eyes were included in the study. The device used for the measurement was the Visante®omni system. The stimuli were set up at different vergences (0.0 D, -1.5 D, and -3.0 D). The angle opening distance 500 and 750, the trabecular iris space area 500 and 750, and the scleral spur angle parameters were assessed at the nasal and temporal regions. The results in the iridotrabecular angle comparing the three accommodative states of the eye did not yield any statistically significant difference at nasal or temporal angle sections. In light of our results and in the conditions of our study, the structures of the iridocorneal angle are not significantly changed with accommodation.
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Affiliation(s)
- Daniel Monsálvez-Romín
- Optics and Optometry and Vision Sciences Department, University of Valencia, Burjassot 46100, Spain
| | | | - Teresa Ferrer-Blasco
- Optics and Optometry and Vision Sciences Department, University of Valencia, Burjassot 46100, Spain
| | - José J Esteve-Taboada
- Optics and Optometry and Vision Sciences Department, University of Valencia, Burjassot 46100, Spain
| | - Robert Montés-Micó
- Optics and Optometry and Vision Sciences Department, University of Valencia, Burjassot 46100, Spain
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Ruiz-Belda C, Piñero DP, Ruiz-Fortes P, Soto-Negro R, Moya M, Pérez-Cambrodí RJ, Artola A. Intra-session repeatability of iridocorneal angle measurements provided by a Scheimpflug photography-based system in healthy eyes. Graefes Arch Clin Exp Ophthalmol 2015; 254:169-75. [PMID: 26174969 DOI: 10.1007/s00417-015-3105-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 06/14/2015] [Accepted: 07/02/2015] [Indexed: 11/29/2022] Open
Abstract
PURPOSE The purpose of this study was to evaluate intra-session repeatability of measurements of the iridocorneal angle at different meridians in the nasal and temporal areas in healthy eyes using the Sirius Scheimpflug photography-based system in glaucoma analysis mode. METHODS A total of 43 eyes of 43 patients ranging in age from 36 to 79 years were enrolled in the study. All eyes received a comprehensive ophthalmologic examination including a complete anterior segment analysis with the Costruzione Strumenti Oftalmici [CSO] Sirius system. Three consecutive measurements of nasal and temporal angles at 0°, ±10°, ±20°, and ±30° meridians were obtained in order to assess the intra-session repeatability of iridocorneal angle measurements provided by the device using the glaucoma analysis mode. Within-subject standard deviation (Sw), coefficient of variation (CV), and intraclass correlation coefficient (ICC) values were calculated. RESULTS The mean Sw was 1.07 ± 1.09°, 1.22 ± 1.53°, 0.66 ± 0.51°, 0.86 ± 0.57°, 0.68 ± 0.65°, 0.84 ± 0.68°, and 0.91 ± 0.70° at the temporal 30°, 20°, 10°, 0°, -10°, -20°, and -30° positions, respectively. Mean Sw was 3.13 ± 3.15°, 3.43 ± 3.63°, 2.75 ± 2.29°, 2.19 ± 1.55°, 1.90 ± 1.49°, 2.14 ± 1.74°, and 2.24 ± 2.06° at the temporal -30°, -20°, -10°, 0°, 10°, 20°, and 30° positions, respectively. Mean CV ranged from 1.36 ± 1.05 % (nasal 0° position) to 10.92 ± 13.95 % (nasal -20° position). ICC values ranged from 0.778 to 0.972. CONCLUSIONS The glaucoma analysis mode of the Sirius system provides consistent measurements of the iridocorneal angle at different meridians in healthy eyes, with slightly less consistency for nasal measurements. It may be considered a clinically useful non-invasive technique for the detection of potentially occludable angles.
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Affiliation(s)
- Clara Ruiz-Belda
- Department of Ophthalmology (OFTALMAR), Vithas Medimar International Hospital, C/Padre Arrupe, 20, 1st floor, 03016, Alicante, Spain.,Foundation for Visual Quality (FUNCAVIS), Alicante, Spain
| | - David P Piñero
- Department of Ophthalmology (OFTALMAR), Vithas Medimar International Hospital, C/Padre Arrupe, 20, 1st floor, 03016, Alicante, Spain. .,Foundation for Visual Quality (FUNCAVIS), Alicante, Spain. .,Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain.
| | - Pedro Ruiz-Fortes
- Department of Ophthalmology (OFTALMAR), Vithas Medimar International Hospital, C/Padre Arrupe, 20, 1st floor, 03016, Alicante, Spain.,Foundation for Visual Quality (FUNCAVIS), Alicante, Spain
| | - Roberto Soto-Negro
- Department of Ophthalmology (OFTALMAR), Vithas Medimar International Hospital, C/Padre Arrupe, 20, 1st floor, 03016, Alicante, Spain.,Foundation for Visual Quality (FUNCAVIS), Alicante, Spain
| | - Myriam Moya
- Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain
| | - Rafael J Pérez-Cambrodí
- Department of Ophthalmology (OFTALMAR), Vithas Medimar International Hospital, C/Padre Arrupe, 20, 1st floor, 03016, Alicante, Spain.,Foundation for Visual Quality (FUNCAVIS), Alicante, Spain
| | - Alberto Artola
- Department of Ophthalmology (OFTALMAR), Vithas Medimar International Hospital, C/Padre Arrupe, 20, 1st floor, 03016, Alicante, Spain.,Miguel Hernández University, Elche (Alicante), Spain
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