J Korean Ophthalmol Soc > Volume 60(12); 2019 > Article
Journal of the Korean Ophthalmological Society 2019;60(12):1191-1197.
DOI: https://doi.org/10.3341/jkos.2019.60.12.1191    Published online December 15, 2019.
Result of Central Vault Depending on Lens Diameters in Patients with Implantable Collamer Lens Implantation.
Kibum Park, Jin Kwon Chung
Department of Ophthalmology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea. schcornea@schmc.ac.kr
안내 후방인공수정체삽입술 렌즈 직경에 따른 중심 볼트 결과
박기범 · 정진권
순천향대학교 의과대학 서울병원 안과학교실
Correspondence:  Jin Kwon Chung,
Email: schcornea@schmc.ac.kr
Received: 16 May 2019   • Revised: 26 June 2019   • Accepted: 6 December 2019
Abstract
PURPOSE
To compare vaulting height and clinical results in patients who underwent anterior chamber phakic intraocular lens implantation with different lens diameters. METHODS: Thirty-five eyes (19 patients) who underwent anterior chamber phakic intraocular lens (V4C or V5) implantation were divided into two groups according to lens diameters, which were based on the patient C or V5) implantation were dividdiameters. Group 1 was implanted with a 12.6 mm diameter lens (WTW, 11.3–11.7 mm; 22 eyes) and group 2 was implanted with a 13.2 mm diameter lens (WTW, 11.8–12.2 mm; 13 eyes). Changes in the central vault over time, refractive error, visual acuity, endothelial cell count, and complications were evaluated as clinical outcomes. RESULTS: The post operative mean central vaulting heights at 1, 3, and 6 months Group 2 showed significantly higher vaulting at each visit (all, p < 0.05). High vaulting (greater than 750 mm) at 1, 3, and 6 months after surgery involved 27% (6 eyes), 27% (6 eyes), and 18% (4 eyes) in group 1 and 69% (9 eyes), 61% (8 eyes), and 53% (7 eyes) in group 2 (p < 0.05), respectively. Uncorrected distance visual acuity (logMAR) and spherical equivalent were not significantly different between two groups (p > 0.05). CONCLUSIONS: The results of optimal vaulting shows the lens diameter should be adjusted according to the surgeon's experience or nomogram when the horizontal corneal WTW diameter was used to determine lens diameter. Especially in cases using a V4C or V5 model anterior chamber phakic intraocular lens, 13.2 mm in diameter (V5) shows higher central vaulting than 12.6 mm in diameter (V4C).
Key Words: Anterior chamber depth;Implantable collamer lens;Vaulting;White-to-white


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