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Ning J, Zhang Q, Liang W, Zhang R, Xing Z, Jin L, Zhang L. Bibliometric and visualized analysis of posterior chamber phakic intraocular lens research between 2003 and 2023. Front Med (Lausanne) 2024; 11:1391327. [PMID: 38651068 PMCID: PMC11034429 DOI: 10.3389/fmed.2024.1391327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 03/27/2024] [Indexed: 04/25/2024] Open
Abstract
Introduction Myopia is causing a major public health concern, with its prevalence increasing globally. This study aimed to discuss posterior chamber phakic intraocular lens (pIOL) research publication trends and hotspots over the past 20 years. Methods Bibliometric analysis was performed using the Web Science Core Collection to investigate posterior-chamber pIOL research publication trends. The extracted records were analyzed, and a knowledge map was built using VOSviewer v.1.6.20. The analysis included visualizing the annual publication count, countries/regions distribution, international and institutional collaborations, author productivity, and journal contribution, in addition to identifying knowledge bases and hotspots. Burst keywords were extracted using CiteSpace v.6.1.R. Results In total, 791 articles on posterior chamber pIOLs published between 2003 and 2023 were retrieved. China had the highest number of publications, whereas Japanese papers received the most citations. Fudan University had the highest number of publications, with articles from Kitasato University having the highest number of citations. Regarding individual research, Xingtao Zhou has published the most significant number of articles, and Shimizu Kimiya had the highest number of citations. The top productive/influential journal was 'Journal of Cataract & Refractive Surgery'. The top cited references primarily focused on reporting the clinical outcomes of implantable collamer lens (ICL) for individuals with moderate to high myopia. The keywords primarily formed four clusters: posterior chamber pIOL clinical outcomes for myopic astigmatism correction, posterior chamber pIOL implantation complications, ICL size selection and postoperative vault predictions, and postoperative visual quality following posterior chamber pIOL implantation. Conclusion This study presents the first bibliometric analysis of research trends in posterior chamber pIOL over the past two decades. We investigated the current state and emerging trends of global collaboration and research focal points in this field, offering fresh insights and guidance for researchers.
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Affiliation(s)
- Jiliang Ning
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Qiaosi Zhang
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Wei Liang
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Rui Zhang
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Zequn Xing
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Lin Jin
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Lijun Zhang
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
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2
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Ouchi M. Vault changes in eyes with a vertically implanted implantable collamer lens. Sci Rep 2024; 14:3484. [PMID: 38346992 PMCID: PMC10861517 DOI: 10.1038/s41598-024-52913-8] [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: 07/19/2023] [Accepted: 01/25/2024] [Indexed: 02/15/2024] Open
Abstract
Sulcus-to-sulcus vertical diameter is longer than the horizontal. However, the effect of vertical positioning of the implantable collamer lens (ICL) on the vault compared to preoperative prediction is unclear. This prospective consecutive case series aimed to examine postoperative and preoperative predicted vaults during vertical ICL fixation. This study assessed 180 right eyes in 180 patients with myopic astigmatism. For the 90 eyes in 90 patients who underwent horizontal fixation (horizontal group) and 90 eyes in 90 patients who underwent vertical fixation (vertical group), biometrics by three-dimensional tomography of the anterior segment optical coherence tomography (A-OCT) was performed before surgery and 2 h, 1 day, 1 week, 1 month and 3 months after surgery. The anterior chamber depth did not change over time in both groups, and there was no significant difference from preoperative values. The postoperative vault values were significantly lower in the vertical group than in horizontal group over time. The difference between vault measurements and preoperative predictions at all postoperative time points was significantly greater in the vertical group than in horizontal group. Vertical fixation of the ICL reduced the vault by > 100 μm compared with horizontal fixation, which was different from the A-OCT preoperative predicted value.
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Affiliation(s)
- Masayuki Ouchi
- Masayuki Ouchi Eye Clinic, 9-1 Nishikujo Ohkuni-cho, Minami-ku, Kyoto, 601-8449, Japan.
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Naujokaitis T, Auffarth GU, Łabuz G, Kessler LJ, Khoramnia R. Diagnostic Techniques to Increase the Safety of Phakic Intraocular Lenses. Diagnostics (Basel) 2023; 13:2503. [PMID: 37568866 PMCID: PMC10417808 DOI: 10.3390/diagnostics13152503] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/25/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
Preoperative and postoperative diagnostics play an important role in ensuring the safety of patients with phakic intraocular lenses (pIOLs). The risk of endothelial cell loss can be addressed by regularly measuring the endothelial cell density using specular microscopy and considering the endothelial cell loss rate and the endothelial reserve in accordance with the patient's age when deciding whether to explant a pIOL. The anterior chamber morphometrics, including the anterior chamber depth and the distance between the pIOL and the endothelium, measured using Scheimpflug tomography and anterior segment optical coherence tomography (AS-OCT), can help to assess the risk of the endothelial cell loss. In patients undergoing posterior chamber pIOL implantation, accurate prediction of the vault and its postoperative measurements using AS-OCT or Scheimpflug tomography are important when assessing the risk of anterior subcapsular cataract and secondary glaucoma. Novel approaches based on ultrasound biomicroscopy and AS-OCT have been proposed to increase the vault prediction accuracy and to identify eyes in which prediction errors are more likely. Careful patient selection and regular postoperative follow-up visits can reduce the complication risk and enable early intervention if a complication occurs.
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Affiliation(s)
| | | | | | | | - Ramin Khoramnia
- Department of Ophthalmology, University of Heidelberg, 69120 Heidelberg, Germany
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Niu L, Zhang Z, Miao H, Zhao J, Wang X, He JC, Zhou X. Effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens. EYE AND VISION (LONDON, ENGLAND) 2022; 9:42. [PMID: 36329521 PMCID: PMC9635130 DOI: 10.1186/s40662-022-00313-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 10/13/2022] [Indexed: 11/06/2022]
Abstract
Background To investigate the effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens (ICL V4c). Methods This observational study recruited 62 eyes of 31 myopia patients underwent ICL V4c implantation. Anterior segment optical coherence tomography (AS-OCT) assessed the anterior chamber depth (ACD), ACD-ICL (distance from the corneal endothelium to anterior surface of the ICL V4c), vault (distance between the posterior ICL V4c surface and anterior crystalline lens surface), and crystalline lens tilt under various lighting conditions and accommodation relative to the corneal topographic axis at one year after ICL V4c implantation. Baseline was defined as the scotopic condition, which was also the non-accommodative stimulus condition. The ICL V4c tilt was analyzed using MATLAB. The significance level was set at P < 0.05. Results The ACD-ICL values were similar under various lighting conditions (P = 0.978) but decreased during accommodation (P < 0.001). The vault was significantly smaller under mesopic and photopic conditions than the baseline (P = 0.044 and P < 0.001, respectively) but remained unchanged during accommodation (P = 0.058). The inferotemporal proportion of ICL V4c (88.7%, 55 eyes) and crystalline lens (74.2%, 46 eyes) tilts were not significantly different (P = 0.063). Crystalline lens under various lighting conditions and accommodation exhibited similar tilts. The vertical tilt of ICL V4c was significantly larger under photopic conditions than the baseline (P = 0.038). The horizontal and total tilts were significantly decreased during accommodation (P = 0.043 and 0.013, respectively). Conclusions The axial position of ICL V4c in the anterior chamber was stable under various lighting conditions. Lighting conditions and accommodation may influence vertical, horizontal and total tilts of ICL V4c. Supplementary Information The online version contains supplementary material available at 10.1186/s40662-022-00313-2.
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Affiliation(s)
- Lingling Niu
- Department of Ophthalmology and Optometry, 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 Research Center of Ophthalmology and Optometry, Shanghai, China
| | - Zhe Zhang
- Department of Ophthalmology and Optometry, 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 Research Center of Ophthalmology and Optometry, Shanghai, China
| | - Huamao Miao
- Department of Ophthalmology and Optometry, 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 Research Center of Ophthalmology and Optometry, Shanghai, China
| | - Jing Zhao
- Department of Ophthalmology and Optometry, 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 Research Center of Ophthalmology and Optometry, Shanghai, China
| | - Xiaoying Wang
- Department of Ophthalmology and Optometry, 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 Research Center of Ophthalmology and Optometry, Shanghai, China
| | - Ji C He
- New England College of Optometry, MA, Boston, USA.
| | - Xingtao Zhou
- Department of Ophthalmology and Optometry, 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 Research Center of Ophthalmology and Optometry, Shanghai, China.
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Zhang J, Shao J, Zheng L, Zhao X, Chen S. Implantable collamer lens sizing based on measurement of the sulcus-to-sulcus distance in ultrasound biomicroscopy video clips and ZZ ICL formula. BMC Ophthalmol 2022; 22:363. [PMID: 36071422 PMCID: PMC9454160 DOI: 10.1186/s12886-022-02583-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 08/29/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To evaluate a new method of implantable collamer lens (ICL) sizing based on ultrasound biomicroscopy (UBM) video clips. METHODS This observational study included consecutive patients with myopia and myopic astigmatism scheduled for V4c toric ICL (TICL) implantation (STAAR) at Hangzhou MSK Eye Hospital (October 2020 to November 2020). Sulcus-to-sulcus (STS) distance, lens thickness (LT), and clinical refraction were measured preoperatively. The ZZ ICL formula (provides the predicted vault height and refraction based on TICL size, intraocular meridian, power, and eye parameters, including STS distance and LT) was used to select TICL size and predict vault height and residual refraction, which was also compared with the STAAR software recommended. Vault and residual refraction were measured at 3 months postoperatively. RESULTS The analysis included 168 eyes in 84 patients. Postoperative vault size was comparable to that predicted by the ZZ ICL formula (528 ± 193 vs. 545 ± 156 μm, P = 0.227). Vault prediction error (PE) by the ZZ ICL formula was within 100, 300, and 500 μm in 40.48%, 88.10%, and 100% of eyes, respectively. Spherical equivalent (SE) and absolute cylindrical refractive error were 0.36 ± 0.48 and 0.40 ± 0.31 D at 3 months postoperatively. The SE PE, absolute cylindrical PE, and percentages of eyes with an absolute cylindrical PE within ± 0.50 D and ± 1.00 D were lower for the ZZ ICL formula than for the STAAR software (P < 0.01). CONCLUSIONS Combining measurements obtained in UBM video clips with the ZZ ICL formula provides an effective method of sizing TICLs and predicting vault height and residual refractive error.
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Affiliation(s)
- Jun Zhang
- Department of Ophthalmology, Hangzhou MSK Eye Hospital & MSK Eye Hospital of Hangzhou Medical College, Hangzhou, China.
| | - Jie Shao
- Department of Ophthalmology, Hangzhou MSK Eye Hospital & MSK Eye Hospital of Hangzhou Medical College, Hangzhou, China
| | - Li Zheng
- Department of Ophthalmology, Hangzhou MSK Eye Hospital & MSK Eye Hospital of Hangzhou Medical College, Hangzhou, China
| | - Xia Zhao
- Department of Ophthalmology, Hangzhou MSK Eye Hospital & MSK Eye Hospital of Hangzhou Medical College, Hangzhou, China
| | - Shu Chen
- Department of Ophthalmology, Hangzhou MSK Eye Hospital & MSK Eye Hospital of Hangzhou Medical College, Hangzhou, China
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Mahmoud MSED, AbdelHalim AS, Zein HA. Effect of Light Conditions and Accommodation on Implantable Phakic Contact Lens Vault by Anterior Segment Optical Coherence Tomography. Clin Ophthalmol 2022; 16:1439-1447. [PMID: 35547401 PMCID: PMC9084507 DOI: 10.2147/opth.s359296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 04/11/2022] [Indexed: 11/26/2022] Open
Abstract
Purpose To investigate the dynamic pupil and vault changes in eyes with implantable phakic contact lens (IPCL) under photopic and scotopic settings, as well as during accommodation using the anterior segment optical coherence tomography (AS-OCT). Methods A prospective observational study included consecutive 36 eyes of myopic patients who underwent IPCL V2.0 implantation. Under photopic and scotopic light settings, as well as during accommodation, all patients were scanned using CASIA OCT (CASIA2; TOMEY, Nagoya, Japan). The pupil size, the vault (distance between the back surface of the IPCL and the anterior lens capsule), ACD-lens (distance between the posterior corneal surface and the anterior lens surface), IPCL-lens (distance between the posterior corneal surface and the anterior IPCL surface), and lens thickness (LT) were the study parameters. Results The vault was significantly lower under photopic conditions (p-value<0.001). The pupil size was significantly smaller in photopic conditions (p-value<0.001). LT (p-value=0.975) and ACD-lens (p-value=0.917) were not significantly different between scotopic and photopic conditions, while the ACD-IPCL was significantly larger during photopic conditions (p-value=0.013). There were significant changes in all parameters between accommodative and non-accommodative conditions. Conclusion The IPCL vault decreased significantly under photopic light conditions and accommodation.
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Affiliation(s)
- Mohamed Salah El-Din Mahmoud
- Ophthalmology Department, Faculty of Medicine, Minia University, Minia, Egypt
- Correspondence: Mohamed Salah El-Din Mahmoud, Ophthalmology Department, Faculty of Medicine, Minia University, Minia, Egypt, Tel +20 1003321802, Email ;
| | | | - Hosny Ahmed Zein
- Ophthalmology Department, Faculty of Medicine, Minia University, Minia, Egypt
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7
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Li L, Zhang B, Wang Z. Comparison of accommodation and accommodative micro-fluctuation after implantable collamer lens and LASIK surgery for myopia. BMC Ophthalmol 2022; 22:8. [PMID: 34983448 PMCID: PMC8725356 DOI: 10.1186/s12886-021-02217-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 12/15/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To longitudinally analyze and compare the accommodative micro-fluctuation (MFs) and accommodative function between myopic patients after implantable collamer lens (ICL) implantation and laser in situ keratomileusis (LASIK). METHODS Patients with good corrected visual acuity (20/20 or better) and underwent ICL (V4c) and LASIK for myopic-correction (ranging from - 3.50 to - 8.50 D) were recruited. Refraction, amplitude of accommodation (AMP), accommodative lag, higher-order aberration (HOA), and MFs were recorded before surgery and 1 and 3 months after surgery. The ACOMEREF automatic refractor was used to measure the high-frequency component (HFC) of the MFs, which suggested tension of the ciliary muscle. RESULTS The study comprised 120 eyes. At 3 months after surgery, the manifest refractive spherical equivalent of the ICL and LASIK groups were - 0.11 and - 0.09 D, respectively (p = 0.46). HFC values were significantly higher at 1 month (p = 0.03) and 3 months postoperatively (p = 0.03) in the ICL group compared to that in the LASIK group. The ocular HOA of the ICL group was 1.08 ± 0.43 μm, which was lower than the LASIK group 1.45 ± 0.54 μm (p = 0.01). No significant differences in AMP and accommodative lag between groups were noted at 3 months postoperatively. There was a positive correlation between HFC and vault of the ICL lens (r2 = 0.14, p = 0.005). There were no correlations between HFC and ocular HOA and postoperative MRSE in the two groups (all p>0.05). CONCLUSIONS The HFC increased significantly after an early period of ICL implantation compared to laser in situ keratomileusis for myopic correction, which indicated increased tension of the ciliary muscle, and had a positive correlation on the vault of the ICL lens; However, studies with longer follow-up time and more structural evaluation are needed.
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Affiliation(s)
- Li Li
- Aier School of Ophthalmology, Central South University, Fourth Floor, New Century Mansion, 198 Middle Furong Road, Changsha, China.,Department of Refractive Surgery, Guangzhou Aier Eye Hospital, Guangzhou, China.,Chongqing Eye and Vision Care Hospital, Chongqing, China.,Aier Institute of Refractive Surgery, Aier Eye Hospital Group, Changsha, China
| | - Bo Zhang
- Department of Refractive Surgery, Guangzhou Aier Eye Hospital, Guangzhou, China.,Aier Institute of Refractive Surgery, Aier Eye Hospital Group, Changsha, China
| | - Zheng Wang
- Aier School of Ophthalmology, Central South University, Fourth Floor, New Century Mansion, 198 Middle Furong Road, Changsha, China. .,Department of Refractive Surgery, Guangzhou Aier Eye Hospital, Guangzhou, China. .,Aier Institute of Refractive Surgery, Aier Eye Hospital Group, Changsha, China.
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8
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Vault changes and pupillary responses to light in myopic and toric implantable collamer lens. BMC Ophthalmol 2021; 21:366. [PMID: 34656092 PMCID: PMC8520211 DOI: 10.1186/s12886-021-02119-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 09/24/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Achieving an appropriate vault is the main concern after the implantation of Implantable Collamer Lens (ICLs) for surgical correction of high myopia. The vault will vary with time and optical parameters, such as accommodation and pupil size. This research is to evaluate the vault change in Myopic and Toric ICLs under different lighting conditions; and to analyze the relationship between vault changes and pupillary responses to light. METHODS We enrolled and analyzed 68 eyes from 68 patients who were implanted with Myopic EVO ICLs; we also included 60 eyes from 60 patients who were implanted with Toric EVO ICLs. The anterior chamber depth, pupil size and the post-operative vault were evaluated, 1 week after the operation, using a Visante Optical Coherence Tomography (OCT) under different lighting conditions. For each eye that was assessed, we calculated the vault change, which is defined as the difference between vault under mesopic condition and photopic condition; and the rate of vault change, which is defined as the vault change divided by mesopic vault. RESULTS No significant difference was noted with the anterior chamber depth between mesopic and photopic conditions in either group. A significant decrease in vault and pupil size was detected under photopic condition in both groups. We found no difference in vault change between Myopic and Toric EVO ICLs under different lighting conditions. Moreover, the rate of vault change had a significant decrease with increased mesopic vault (baseline value). CONCLUSIONS Too low a mesopic vault has a big rate of vault change, which may cause the contact of ICL with crystalline lens in photopic state; Too high a mesopic vault would constrict the posterior movement of pupil. The findings of the study suggest that, for patients with high or low vault, we should be more careful and must perform checks in different lighting conditions.
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Zhao J, Zhao J, Yang W, Li M, Hao G, Chen Z, Wang X, Yao P, Zhou X. Consecutive contralateral comparison of toric and non-toric implantable collamer lenses V4c in vault after implantation for myopia and astigmatism. Acta Ophthalmol 2021; 99:e852-e859. [PMID: 33369209 DOI: 10.1111/aos.14720] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/18/2020] [Accepted: 11/21/2020] [Indexed: 11/30/2022]
Abstract
AIMS To compare the vault performance between implantable collamer lens (ICL) V4c and Toric ICL (TICL) V4c after implantation and to investigate the affecting factors. METHODS Sixty-eight eyes from 34 patients with myopia or myopia astigmatism who underwent implantation of TICL in one eye (group A) and identically sized ICL (group B) in the contralateral eye were included. Mean follow-up time were 7.58 ± 1.63 months (range: 6-10 months). Vault was compared between the two groups and correlations between vault and age, preoperative ocular biometric measurements were analysed. Generalized estimating equation (GEE) model of postoperative vault adjusting for within-patient intereye correlations was performed. RESULTS The safety indices were 1.27 and 1.35, and the efficacy indices were 1.20 and 1.24 for groups A and B, respectively. Vault of TICL was significantly higher than that of ICL (554.11 ± 219.36 μm vs 449.70 ± 172.47 μm, P < 0.001). The difference between ICL/TICL size and WTW (size-WTW) and STS (size-STS), anterior chamber depth and pupil diameter (PD) were positively correlated with vault. Patient age and clear lens rise measured by Pentacam were negatively correlated with vault. Results of GEE model showed preoperative PD, age, cylindrical power of TICL and size-WTW were influencing factors for postoperative vault. CONCLUSIONS Vault after TICL implantation is higher than that with ICL. PD, age, cylindrical power of TICL and size-WTW could affect postoperative vault.
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Affiliation(s)
- Jiao Zhao
- Department of Ophthalmology People’s Hospital of Leshan Leshan China
| | - Jing Zhao
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
| | - Wen Yang
- Department of Ophthalmology The Third People’s Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Meiyan Li
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
| | - Gengsheng Hao
- Department of Ophthalmology People’s Hospital of Leshan Leshan China
| | - Zhuoyi Chen
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
| | - Xiaoying Wang
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
| | - Peijun Yao
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
| | - Xingtao Zhou
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
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10
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Zhang J, Shao J, Zheng L, Zhao X, Sun Y. Changes in ocular parameters the crystalline lens after implantation of a collamer lens. Clin Exp Optom 2021; 105:587-592. [PMID: 34379036 DOI: 10.1080/08164622.2021.1958654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
CLINICAL RELEVANCE Understanding changes in ocular anatomical parameters after intraocular lens implantation will allow a more accurate determination of dioptric power prior to surgery. BACKGROUND The crystalline lens position might change due to the implantation and removal of an implantable collamer lens (ICL) or toric implantable collamer lens (TICL). This study aimed to assess the effect of ICL implantation on position of the crystalline lens. METHODS This retrospective study was conducted on patients who underwent V4c ICL or V4c TICL implantation between March and September, 2018. Preoperative and post-operative (2 weeks, 3 months and 6 months) axial length, central corneal thickness, crystalline lens position, crystalline lens thickness and vault height were analysed. Multivariable linear regression was used to determine the variables associated with 6-month changes in lens position. RESULTS This study included 117 eyes of 117 patients. There were decreases in all vertical distance measures from the central corneal endothelium to the anterior and posterior crystalline lens capsule (all p > 0.05). The amount of reduction was related to the crystalline lens position before the operation and crystalline lens thickness after the operation (all p < 0.01). An error in anterior chamber depth and lens thickness may appear when the ICL/TICL is close to the crystalline lens. CONCLUSION Phakic intraocular lens implantation resulted in lens thickening and forward movement on day 1 post-operatively, which becomes stable within 6 months. Preoperative lens position and post-operative lens thickness were related to the amount of movement.
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Affiliation(s)
- Jun Zhang
- Department of Ophthalmology, Hangzhou MSK Eye Hospital, Hangzhou, China
| | - Jie Shao
- Department of Ophthalmology, Hangzhou MSK Eye Hospital, Hangzhou, China
| | - Li Zheng
- Department of Ophthalmology, Hangzhou MSK Eye Hospital, Hangzhou, China
| | - Xia Zhao
- Department of Ophthalmology, Hangzhou MSK Eye Hospital, Hangzhou, China
| | - Yi Sun
- Department of Ophthalmology, Hangzhou MSK Eye Hospital, Hangzhou, China
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Almorín-Fernández-Vigo I, Sánchez-Guillén I, Fernández-Vigo JI, De-Pablo-Gómez-de-Liaño L, Kudsieh B, Fernández-Vigo JÁ, Macarro-Merino A. Agreement between optical coherence and Scheimpflug tomography: Vault measurements and reproducibility after implantable collamer lens implantation. J Fr Ophtalmol 2021; 44:1370-1380. [PMID: 34330550 DOI: 10.1016/j.jfo.2021.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/16/2021] [Accepted: 03/15/2021] [Indexed: 11/20/2022]
Abstract
PURPOSE To evaluate the agreement between Scheimpflug tomography (Pentacam, Oculus) and anterior segment optical coherence tomography (AS-OCT, RTVue 100, Optovue) as well as the reproducibility of each technique in assessing the lens-ICL distance (vault) after implantable collamer lens (ICL) implantation. METHODS The vault was measured manually with Scheimpflug tomography and AS-OCT. Intraclass correlation coefficients (ICC) and Bland-Altman plots were used to determine the reproducibility of measurements and the agreement between them. Multivariate regression analysis was performed to identify predictors of differences in vault measurements between devices. RESULTS 80 eyes of 46 ICL patients were analyzed. Mean patient age was 33.8±7.4 years (range, 21 to 51), and 27 (59%) were women. The preoperative spherical equivalent refraction ranged from -26 to 8.5 diopters (D). The mean vault measured by AS-OCT was 558.8±240.2μm (range, 162 - 1220) vs. 430.1±215.3μm (range, 0 to 1070) by Pentacam. AS-OCT yielded vault values, on average, 128.1±64.6μm higher than the Pentacam (range, -22 to 293μm). The ICC values for consistency and absolute agreement were 0.960 and 0.928, respectively. Reproducibility of vault measurements was excellent for both devices (ICC≥0.946). Four parameters-vault, pupil diameter (PD), PD differences between devices, and preoperative spherical equivalent refraction-were significant predictors of differences in vault measurements (adjusted-R2=0.412; P<0.001). CONCLUSIONS Agreement between AS-OCT and Pentacam for vault measurement was good. Vaults were higher when measured by AS-OCT. These differences are clinically relevant, and therefore these devices cannot be used interchangeably to measure vault.
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Affiliation(s)
| | - I Sánchez-Guillén
- Centro Internacional de Oftalmología Avanzada, Badajoz, Spain; Department of ophthalmology, hospital Llerena-Zafra, Badajoz, Spain
| | - J I Fernández-Vigo
- Centro Internacional de Oftalmología Avanzada, Madrid, Spain; Department of ophthalmology, hospital Clínico San Carlos, Madrid, Spain
| | | | - B Kudsieh
- Centro Internacional de Oftalmología Avanzada, Madrid, Spain; Department of ophthalmology, hospital Puerta de Hierro, Madrid, Spain
| | - J Á Fernández-Vigo
- Centro Internacional de Oftalmología Avanzada, Badajoz, Spain; Centro Internacional de Oftalmología Avanzada, Madrid, Spain; School of Medicine, Universidad de Extremadura, Badajoz, Spain
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12
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Zhu QJ, Chen WJ, Zhu WJ, Xiao HX, Zhu MH, Ma L, Yuan Y, Song E. Short-term changes in and preoperative factors affecting vaulting after posterior chamber phakic Implantable Collamer Lens implantation. BMC Ophthalmol 2021; 21:199. [PMID: 33957891 PMCID: PMC8101126 DOI: 10.1186/s12886-021-01963-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 04/26/2021] [Indexed: 12/16/2022] Open
Abstract
Background To describe the very early vault changes in the first month after Implantable Collamer Lens (ICL) implantation and to evaluate the effect of preoperative biometric factors on vault. Methods Eighty-three eyes from eighty-three subjects with complete data who met follow-up requirements were recruited in this retrospective study between May 2019 and March 2020. We quantitatively assessed the postoperative vault at 2 h, 1 day, 1 week, and 1 month following implantation. Associations between the postoperative vault and age, ICL size, spherical equivalent (SE), axial length (AL), central corneal thickness (CCT), flat keratometry (K), steep K, mean K, anterior chamber depth (ACD), crystalline lens thickness (LT), white-to-white (WTW) diameter obtained by three devices, horizontal and vertical sulcus-to-sulcus (STS) diameter, bright and dark pupil sizes (BPS and DPS) and DPS-BPS were investigated using Spearman’s correlation analysis and stepwise multiple regression analysis. Results The mean vault values at 2 h, 1 day, 1 week, and 1 month after ICL implantation were 672.05 ± 30.72, 389.15 ± 28.33, 517.23 ± 30.76 and 530.12 ± 30.22 μm, respectively. Significant differences were found in the vault values at 2 h, 1 day and 1 week after the operation. The ICL size (β = 0.942; p < 0.001), followed by horizontal STS (β = -0.517; p < 0.001), crystalline LT (β = -0.376; p < 0.001) and vertical STS (β = -0.257; p = 0.017), significantly influenced the vault at 1 month after the operation. The multiple regression equation was expressed as follows: central vault (µm) = -1369.05 + 657.121 × ICL size- 287.408 × horizontal STS − 432.497 × crystalline LT − 137.33 × vertical STS (adjusted R2 = 0.643). Conclusions After ICL implantation, the vault decreased and then increased, but it did not return to the vault value 2 h after surgery. The ICL size, horizontal and vertical STS and crystalline LT are key factors for predicting postoperative vaulting. Supplementary Information The online version contains supplementary material available at 10.1186/s12886-021-01963-x.
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Affiliation(s)
- Qiu-Jian Zhu
- Department of Ophthalmology, Lixiang Eye Hospital of Soochow University, Jiangsu, 215021, Suzhou, China
| | - Wen-Jing Chen
- Department of Ophthalmology, Lixiang Eye Hospital of Soochow University, Jiangsu, 215021, Suzhou, China
| | - Wei-Jian Zhu
- Department of Ophthalmology, Lixiang Eye Hospital of Soochow University, Jiangsu, 215021, Suzhou, China
| | - Hai-Xiang Xiao
- Department of Ophthalmology, Lixiang Eye Hospital of Soochow University, Jiangsu, 215021, Suzhou, China
| | - Man-Hui Zhu
- Department of Ophthalmology, Lixiang Eye Hospital of Soochow University, Jiangsu, 215021, Suzhou, China
| | - Lie Ma
- Department of Ophthalmology, Lixiang Eye Hospital of Soochow University, Jiangsu, 215021, Suzhou, China
| | - You Yuan
- Department of Ophthalmology, Lixiang Eye Hospital of Soochow University, Jiangsu, 215021, Suzhou, China.
| | - E Song
- Department of Ophthalmology, Lixiang Eye Hospital of Soochow University, Jiangsu, 215021, Suzhou, China
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Zhou T, Jiang H, Wang Y, Xie C, Xia J, Shen Y. Comparison of anterior chamber angle changes following phakic intraocular lens with and without a central hole implantation for moderate to high myopic eyes. Medicine (Baltimore) 2020; 99:e23434. [PMID: 33285737 PMCID: PMC7717800 DOI: 10.1097/md.0000000000023434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The aim of this study was to compare the anterior chamber angle changes after implantation of phakic intraocular lens with and without a central hole for moderate to high myopic eyes in Chinese people.This study enrolled 106 eyes of 54 people with intraocular lens V4 implantation and 105 eyes of 53 people with intraocular lens V4c implantation. Postoperative vault, intraocular pressure, and anterior chamber angle changes were assessed using noncontract tonometer and ultrasound biomicroscope, respectively, at 1, 3, 6, and 12months after the surgery.There were no significant differences (all P > .05) between the 2 groups in the depth of the central vault, intraocular pressure, or the width of anterior chamber angle at any time point post-surgery. The anterior chamber angle width in degree had a baseline of 54.40 ± 10.51 in V4c group, and decreased to 27.80 ± 5.62, 26.95 ± 5.56, 27.32 ± 5.66, 27.04 ± 5.47 at 1, 3, 6, and 12 months post-surgery, respectively. Mean preoperative value of 50.62 ± 11.77 decreased to 27.28 ± 6.53, 26.82 ± 6.03, 26.61 ± 5.80, 26.83 ± 5.76 at 1, 3, 6, 12 months, respectively, in V4 group. It had sufficient evidence (P < .001) that anterior chamber angle will narrow done after surgery, but there were no statistically significant differences within groups at any time point after surgery.The anterior chamber angle changes of the V4c group was essentially equivalent to that of conventional V4 group, although implantation of both models will lead to the decrease in anterior chamber angle width.
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14
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Cerpa Manito S, Sánchez Trancón A, Torrado Sierra O, Baptista AMG, Serra PM. <p>Inter-Eye Vault Differences of Implantable Collamer Lens Measured Using Anterior Segment Optical Coherence Tomography</p>. Clin Ophthalmol 2020; 14:3563-3573. [PMID: 33154615 PMCID: PMC7605967 DOI: 10.2147/opth.s258817] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 08/12/2020] [Indexed: 12/29/2022] Open
Affiliation(s)
| | | | | | | | - Pedro Miguel Serra
- Ophthalmology Clinic Vista Sánchez Trancón, Badajoz, Spain
- Optics and Optometry Department, Instituto Superior de Educação e Ciências, Lisbon, Portugal
- Correspondence: Pedro Miguel Serra Email
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15
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Oleszko A, Marek J, Muzyka-Wozniak M. Application of a Partial Least Squares Regression Algorithm for Posterior Chamber Phakic Intraocular Lens Sizing and Postoperative Vault Prediction. J Refract Surg 2020; 36:606-612. [PMID: 32901828 DOI: 10.3928/1081597x-20200630-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 06/24/2020] [Indexed: 11/20/2022]
Abstract
PURPOSE To develop and validate a new algorithm for predicting the postoperative vault of the myopic EVO Visian Implantable Collamer Lens (ICL) V4c (STAAR Surgical AG). METHODS This study included 81 eyes of 43 patients who had undergone ICL implantation. Preoperative data obtained by swept-source optical coherence tomography, Scheimpflug camera, and anterior segment optical coherence tomography were applied to develop a new partial least squares (PLS) regression algorithm. ICL sizing was performed using the standard white-to-white method with the online calculation and ordering system. The postoperative vault was assessed based on anterior segment optical coherence tomography. The PLS approach was applied to create the calibration model for predicting the postoperative vault. The new PLS model was cross-validated using the leave-one-out method and compared to a recently published linear regression model. Agreement between the actual and predicted vault values for the two methods was assessed by the Bland-Altman method. RESULTS There was a statistically significant correlation (P < .001, r = 0.73) between the postoperative vault values and those predicted by the PLS algorithm. Validation of the PLS model yielded lower mean differences and limits of agreement (0 and 410 µm, respectively) than the linear regression method (400 and 750 µm, respectively). CONCLUSIONS The PLS algorithm increases the precision of ICL vault prediction. However, it shows a tendency to overestimate small vault values and underestimate high vaults. [J Refract Surg. 2020;36(9):606-612.].
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16
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The Relationship between Anterior Chamber Angle and Intraocular Pressure Early after V4c Implantable Collamer Lens Implantation. J Ophthalmol 2020; 2020:4014512. [PMID: 32774903 PMCID: PMC7391088 DOI: 10.1155/2020/4014512] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 06/11/2020] [Accepted: 06/24/2020] [Indexed: 11/17/2022] Open
Abstract
Purpose To confirm the relationship between anterior chamber angle (ACA) and intraocular pressure (IOP) early after V4c implantable collamer lens (ICL) implantation. Methods Patients were assigned to two groups: (1) right eyes (control group) and (2) left eyes (experimental group), with miosis conducted immediately after ICL implantation in the left eyes. IOP, angle opening distance (AOD), trabecular-iris angle (TIA), and pupil diameter (PD) were compared between two groups at postoperative hours 1, 2, and 24. The relationship between ACA, PD, and IOP was analyzed by multiple linear regression. Result Thirty-six eyes of 18 patients were enrolled. The prevalence of ocular hypertension (OHT, defined as IOP ≥ 21 mmHg) was 61.11% and 16.67% in the right and left eyes, respectively, (χ2 = 7.481, p=0.006). At postoperative hours 1 and 2, IOP and PD were significantly higher (p < 0.001) in the right eyes, and TIA and AOD were significantly lower (p < 0.05) in the right eyes than in the left eyes. There was no significant difference at 24 h postoperative in these parameters. After the right eye ICL implantation, the changes of AOD 500 and PD were both linearly correlated with postoperative IOP change (β = −23.707 and 1.731, respectively; p = 0.013 and 0.002, respectively). Conclusion The ACA was significantly narrowed immediately after V4c ICL implantation. There was a negative linear correlation between ACA and early IOP and a positive linear correlation between PD and early IOP. We recommend the use of intracameral miotics immediately after V4c ICL implantation to reduce the incidence of IOP spikes.
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17
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Hernández-Rodríguez CJ, Piñero DP. A systematic review about the impact of phakic intraocular lenses on accommodation. JOURNAL OF OPTOMETRY 2020; 13:139-145. [PMID: 31937486 PMCID: PMC7301210 DOI: 10.1016/j.optom.2019.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 07/26/2019] [Accepted: 08/12/2019] [Indexed: 06/10/2023]
Abstract
Phakic intraocular lenses (pIOL) are the main treatment for patients who have either high ametropia or contraindications for laser refractive surgery. The main feature that makes this kind of lenses suitable for its implantation in young adults searching for independence of optical prescription is the conservation of accommodation, since lens extraction is not required. A systematic review has been performed to evaluate the scientific literature on the effect of pIOL implantation on accommodation. Critical assessment of the articles included in the review was achieved using the tool Critical Appraisal Skills Programme in its Spanish form (CASPe). After revising the complete text of 10 articles pre-selected, two quasi-experimental pre-post studies evaluating the outcomes of a specific model of posterior chamber pIOL were included in the systematic review. The CASPe scoring of both studies were 5/11. According to this outcome, the evidence describing the impact of the pIOL implantation on the accommodative function can be defined poor. Some trends are reported as the decrease in the amplitude of accommodation, a decrease positive relative accommodation and improvement of accommodation. However, these results should be confirmed in future controlled studies.
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Affiliation(s)
- Carlos J Hernández-Rodríguez
- Group of Optics and Visual Perception, Department of Optics, Pharmacology and Anatomy, University of Alicante, Spain
| | - David P Piñero
- Group of Optics and Visual Perception, Department of Optics, Pharmacology and Anatomy, University of Alicante, Spain.
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18
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Gargallo-Martinez B, Garcia-Medina JJ, Rubio-Velazquez E, Fernandes P, Villa-Collar C, Gonzalez-Meijome JM, Gutierrez-Ortega R. Vault changes after cyclopentolate instillation in eyes with posterior chamber phakic intraocular lens. Sci Rep 2020; 10:9646. [PMID: 32541775 PMCID: PMC7296012 DOI: 10.1038/s41598-020-66146-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 04/14/2020] [Indexed: 11/09/2022] Open
Abstract
Posterior chamber phakic intraocular lens (pIOL) implantation is a common option for correcting moderate-to-high ocular refractive defects. Because this pIOL is implanted on ciliary sulcus, the distance between the back surface of the pIOL and the anterior surface of the crystalline lens, that it is known as vault, should be measured in different conditions to ensure the technique's safety. Cyclopentolate is a drug that dilates the pupil and relaxes accommodation (cycloplegia). It is often used for different ocular examinations and for other medical purposes. However, there is no evidence of the effect of this drug on vault. This study quantified central vault changes associated with cyclopentolate instillation. We measured the vault under normal conditions (pre-cycloplegic instillation) and after instilling cyclopentolate on 39 eyes of 39 patients with implanted pIOL. Our results suggest that cyclopentolate instillation may induce changes to vault in eyes with implanted pIOL. These changes seem safe and are mainly associated with vault under normal conditions, but also with anterior chamber depth, pupillary diameter and pIOL size.
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Affiliation(s)
- Beatriz Gargallo-Martinez
- Department of Ophthalmology, Clínica Novovisión, Murcia, Spain. .,Departament of Condensed Matter Physics, University of Sevilla, Sevilla, Spain.
| | - Jose Javier Garcia-Medina
- Departament of Ophthalmology, General University Hospital Morales Meseguer, Murcia, Spain. .,Department of Ophthalmology and Optometry, University of Murcia, Murcia, Spain.
| | - Elena Rubio-Velazquez
- Department of Ophthalmology, Clínica Novovisión, Murcia, Spain.,Departament of Ophthalmology, General University Hospital Morales Meseguer, Murcia, Spain
| | - Paulo Fernandes
- Clinical & Experimental Optometry Research Lab, Center of Physics, University of Minho, Braga, Portugal
| | - César Villa-Collar
- Department of Ophthalmology, Clínica Novovisión, Murcia, Spain.,Faculty of Biomedicine and Health, European University of Madrid, Madrid, Spain
| | - José M Gonzalez-Meijome
- Clinical & Experimental Optometry Research Lab, Center of Physics, University of Minho, Braga, Portugal
| | - Ramón Gutierrez-Ortega
- Department of Ophthalmology, Clínica Novovisión, Murcia, Spain.,Department of Ophthalmology and Optometry, University of Murcia, Murcia, Spain
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Chen H, Tian L, Le Q, Zhao F, Zhao Y, Chen Y, Yang Y, Hong J, Xu J. Femtosecond laser-assisted Descemet’s stripping endothelial keratoplasty: a prospective study of 6-month visual outcomes, corneal thickness and endothelial cell loss. Int Ophthalmol 2020; 40:2065-2075. [DOI: 10.1007/s10792-020-01383-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Accepted: 04/10/2020] [Indexed: 11/28/2022]
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20
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Zhu Y, Zhang J, Zhu H, Chen J, Zhou J. The effect of mydriasis on moderate-to-high myopic eyes with implantable collamer lenses V4 and V4c. Eur J Ophthalmol 2019; 30:462-468. [PMID: 30845836 DOI: 10.1177/1120672119831218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE To evaluate the vault change and anterior segment movement induced by mydriasis in moderate-to-high myopic eyes with implantable collamer lenses (ICL). SETTING Shanghai, China. DESIGN A prospective consecutive observational study. METHODS A total of 45 eyes of 24 patients with ICL V4 implantation and 128 eyes of 65 patients with ICL V4c implantation were included and analyzed. Anterior chamber depth, posterior corneal endothelium-to-ICL distance, and vault before and after mydriasis were measured by Pentacam (Oculus, Wetzlar, Germany) at 1, 3, and 6 months after surgery. RESULTS Significant vault increases and anterior chamber depth increases induced by mydriasis were noted in both ICL V4 and V4c groups at 1, 3, and 6 months postoperatively. The corneal endothelium-ICL distance increased significantly in eyes with implanted ICL V4c after mydriasis at 3 and 6 months. Moreover, mydriasis-induced vault increases were greater in the ICL V4 group than in the ICL V4c group at 3 and 6 months. In eyes with implanted ICL V4c, mydriasis-induced vault increases were significantly greater at 1 month than at 3 and 6 months. CONCLUSION Mydriasis results in a general vault increase in eyes with implanted ICLs. The adjustment of the pressure equilibrium via the central hole of the ICL V4c has an important role in vault change. The mydriasis-induced vault increases tend toward stability after 3 months postoperatively. Mydriasis is relatively safe in eyes with ICL implantation.
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Affiliation(s)
- Yi Zhu
- Department of Ophthalmology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Jing Zhang
- Department of Ophthalmology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Haobin Zhu
- Department of Ophthalmology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Jili Chen
- Department of Ophthalmology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Department of Ophthalmology, Shibei Hospital, Shanghai, China
| | - Jibo Zhou
- Department of Ophthalmology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
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Vault Changes Caused by Light-Induced Pupil Constriction and Accommodation in Eyes With an Implantable Collamer Lens. Cornea 2019; 38:217-220. [PMID: 30371566 PMCID: PMC6344073 DOI: 10.1097/ico.0000000000001785] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE An appropriate vault after implantation of a posterior chamber phakic intraocular lens with a central hole (ICL KS-AP) is important for successful long-term outcomes. In the present study, we used anterior segment optical coherence tomography (AS-OCT) to examine dynamic pupil and vault changes under photopic and scotopic conditions and during accommodation in eyes with ICL KS-AP. METHODS This retrospective study included patients at an outpatient ophthalmology clinic who underwent ICL KS-AP implantation >1 month before enrollment. All patients underwent dynamic AS-OCT imaging under photopic and scotopic conditions. Patients aged <40 years also underwent imaging in the accommodative and nonaccommodative states. Primary outcome measures were the pupil size and vault at the maximum and minimum pupil sizes. RESULTS This study included 91 eyes of 47 patients (35.5 ± 8.6 years, 21 men). Accommodation was examined in 51 eyes of 26 patients (28.9 ± 5.0 years, 10 men) younger than 40 years. The pupil size was significantly smaller under photopic conditions (3.64 ± 0.77 mm) than under scotopic conditions (4.91 ± 0.75 mm, P < 0.001) and during accommodation (3.88 ± 0.64 vs. 4.10 ± 0.61 mm, P < 0.001). Vault was also significantly lower under photopic conditions (476.1 ± 219.6 μm) than under scotopic conditions (521.1 ± 220.4 μm, P < 0.001) and during accommodation (454.8 ± 224.9 vs. 481.6 ± 219.1 μm, P < 0.001). CONCLUSIONS Vault can be significantly lowered by light-induced pupil constriction and accommodation in eyes with ICL KS-AP.
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Lee H, Kang DSY, Choi JY, Ha BJ, Kim EK, Seo KY, Kim TI. Rotational Stability and Visual Outcomes of V4c Toric Phakic Intraocular Lenses. J Refract Surg 2018; 34:489-496. [PMID: 30001453 DOI: 10.3928/1081597x-20180521-01] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 05/07/2018] [Indexed: 11/20/2022]
Abstract
PURPOSE To investigate the clinical outcomes and rotational stability following implantation of V4c toric implantable collamer lenses (ICLs) (STAAR Surgical Company, Monrovia, CA) and to analyze the factors that influence rotational stability. METHODS In this prospective observational case series, the authors analyzed the visual outcomes and rotational stability in 52 eyes of 52 patients immediately and 3 and 6 months after implantation. Postoperative rotation was defined as the angle between the adjusted axis and alignment axis. Central vaulting of the ICL was measured in a non-accommodative state using Visante optical coherence tomography (Carl Zeiss Meditec, Jena, Germany). Vector analysis of refractive astigmatism was performed. Regression analysis was used to investigate the association between the degree of rotation 6 months postoperatively and the associated variables. RESULTS The mean efficacy index and safety index 6 months postoperatively were 1.35 ± 0.19 and 1.38 ± 0.22, respectively. In vector analysis, the magnitude of error was -0.20 diopters (D), indicating slight undercorrection. Absolute degree of rotation was 2.81° ± 1.87° immediately after the operation and 3.75° ± 2.92° and 3.87° ± 3.07° at 3 and 6 months postoperatively, respectively (P = .009). Bonferroni-adjusted post-hoc comparison showed that the absolute degree of rotation immediately after the operation was significantly smaller than that after 3 (P = .043) and 6 (P = .023) months, with barely any change after 3 months. No explanatory variable relevant to the absolute degree of rotation was discovered. CONCLUSIONS The V4c toric ICL is predictable, safe, and effective in correcting low and high levels of astigmatism, showing relatively good postoperative rotational stability. [J Refract Surg. 2018;34(7):489-496.].
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Analysis of pre-operative factors affecting range of optimal vaulting after implantation of 12.6-mm V4c implantable collamer lens in myopic eyes. BMC Ophthalmol 2018; 18:163. [PMID: 29980187 PMCID: PMC6035463 DOI: 10.1186/s12886-018-0835-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 06/25/2018] [Indexed: 11/10/2022] Open
Abstract
Background To evaluate clinical factors affecting postoperative vaulting in eyes that had achieved optimal vaulting within the range of 250–750 μm following implantation of 12.6-mm V4c implantable collamer lenses (ICL). Methods A total of 236 eyes of 236 patients that had achieved optimal vaulting following implantation of a 12.6-mm V4c ICL were retrospectively analyzed. Associations between postoperative vaulting and age, preoperative anterior chamber depth (ACD), preoperative axial length (AL), preoperative white-to-white diameter, preoperative pupil size, preoperative sulcus-to-sulcus diameter, and preoperative manifest refraction spherical equivalent were investigated using simple regression, stepwise multiple regression, and multinomial logistic regression analyses. Results Mean central vaulting at the 6-month follow-up was 519.0 ± 112.8 μm. Variables relevant to postoperative vaulting were, in order of influence, preoperative ACD (β = 0.305, p < 0.001), preoperative pupil size (β = 0.218, p < 0.001), and preoperative AL (β = 0.171, p = 0.006). Low preoperative pupil size was associated with low optimal vaulting (250 to 450 μm), relative to that observed in the mid optimal vaulting group (451 to 550 μm) (odds ratio = 0.532, P = 0.021). Increasing preoperative ACD was associated with high optimal vaulting (551 and 750 μm), relative to that observed the mid optimal vaulting group (odds ratio = 6.340, P = 0.034). Conclusions Myopic eyes with greater preoperative ACD, larger pupil size, and longer AL are predisposed to higher postoperative vaulting following 12.6-mm V4c ICL implantation. Therefore, the extremes of these parameters should be considered when choosing V4c ICL size.
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Esteve-Taboada JJ, Domínguez-Vicent A, Monsálvez-Romín D, Del Águila-Carrasco AJ, Montés-Micó R. Non-invasive measurements of the dynamic changes in the ciliary muscle, crystalline lens morphology, and anterior chamber during accommodation with a high-resolution OCT. Graefes Arch Clin Exp Ophthalmol 2017; 255:1385-1394. [DOI: 10.1007/s00417-017-3663-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 03/22/2017] [Accepted: 03/27/2017] [Indexed: 01/28/2023] Open
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Chen H, Niu G, Fan Y, Ma J. Comparison of intraocular pressure andvault after implantation of implantable collamer lens with and without a central hole. BMC Ophthalmol 2016; 16:203. [PMID: 27852246 PMCID: PMC5112696 DOI: 10.1186/s12886-016-0375-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 11/01/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUD The Implantable Collamer Lens (ICL) has been used widely for refractive errors, We performed this prospective randomized comparative study to compare postoperative intraocular pressure (IOP) and vaults of the eyes implanted with conventional ICL and central hole ICL. METHODS This study evaluated 44 eyes of 22 patients who underwent central hole ICL implantation in one eye and conventional ICL implantation in the other eye by randomization assignment. noncontact intraocular pressure were performed on 6 h, 1 day, 3 days, 1 week, 2 weeks, 1 month, 3 months and 6 months, while ICL vaults were measured on 1 day, 1 week, 1 month and 6 months. RESULTS The IOP of both eyeswithcentral hole and conventional ICLrosetemporarily during the first month after surgeries, especially on 1 day and 2 weeks points postoperatively. The IOP ofeyes with central hole ICL was higher than that of conventionl ICL. The vaults ofeyes with central hole and conventional ICL decreased slightly with time but did not significantly affect the postoperative IOP. CONCLUSIONS Despite the sensitivity of viscoelastic agents or inflammation, this newly developed central hole ICL implantation appears to be equivalent in safty and effcacy to conventional ICL implantation for the correction of ametropia. TRIAL REGISTRATION Current Controlled Trials ChiCTR-INR-16008896 . Retrospectively registered 24 July 2016.
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Affiliation(s)
- Haiting Chen
- Department of Ophthalmology, Cangzhou CentralHospital, Hebei, China.,Department of Ophthalmology, Second Hospital of Hebei Medical University, Hebei, China
| | - Guangzeng Niu
- Department of Ophthalmology, Cangzhou CentralHospital, Hebei, China
| | - Yuxiang Fan
- Department of Ophthalmology, Cangzhou CentralHospital, Hebei, China
| | - Jingxue Ma
- Department of Ophthalmology, Second Hospital of Hebei Medical University, Hebei, China.
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Effects of Implantable Collamer Lens V4c Placement on Iridocorneal Angle Measurements by Fourier-Domain Optical Coherence Tomography. Am J Ophthalmol 2016; 162:43-52.e1. [PMID: 26582312 DOI: 10.1016/j.ajo.2015.11.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 11/04/2015] [Accepted: 11/05/2015] [Indexed: 11/20/2022]
Abstract
PURPOSE To assess by Fourier-domain optical coherence tomography (FDOCT) changes produced in iridocorneal angle measurements in patients undergoing Visian Implantable Collamer Lens (ICL) V4c (STAAR Surgical AG) placement. DESIGN Prospective interventional case series. METHODS In 50 eyes of 25 myopic subjects consecutively scheduled for ICL implant, FDOCT (RTVue; Optovue Inc) iridocorneal angle measurements were made before and 1 and 3 months after surgery. Trabecular-iris angle (TIA) and angle opening distance 500 μm anterior to the scleral spur (AOD500) were compared among the quadrants nasal, temporal, and inferior, and correlations with ocular variables including lens vault were examined. RESULTS Preoperative TIA was 48.7 ± 8.7, 48.2 ± 8.7, and 48.7 ± 9.3 degrees for the nasal, temporal, and inferior quadrants, with no differences (P = 1.000). Following ICL implant, corresponding values fell to 31.2 ± 11.5, 30.0 ± 10.7, and 29.7 ± 8.1 degrees at 1 month postsurgery, indicating angle narrowing of 34%-42%, and to 30.6 ± 12.3, 30.1 ± 11.9, and 29.8 ± 12.3 degrees, respectively, at 3 months postsurgery. Angle measurements failed to vary between 1 month and 3 months postsurgery (P = .481). In 8 eyes, iridotrabecular contact attributable to surgery was observed. One month after surgery, vault measurements correlated with TIA (R = -.309; P = .048). Six variables were identified as predictors of TIA at 1 month postsurgery (R(2) = .907). CONCLUSIONS Although considerable angle narrowing was detected 1 month after ICL V4c implant, this narrowing remained stable at 3 months postsurgery. Factors predictive of TIA could serve to identify suitable candidates for ICL placement.
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