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Implanting a posterior chamber phakic intraocular lens with a central hole in highly myopic eyes with peripheral primary iris and ciliary body cysts: clinical effects and observations

Poster Details

First Author: X.Zhou CHINA

Co Author(s):    J. Zhao   D. Luo   T. Han              

Abstract Details


To investigate the safety and efficacy of implanting a posterior chamber implantable collamer lens with a central hole (ICL V4c) in cases of high myopia with peripheral primary iris or ciliary body cysts.


Prospective study.


37 eyes of 19 patients with peripheral primary iris or ciliary body cysts detected by ultrasonic biological microscope (UBM) were included, with spherical powers of -10.26�Â�±3.28D and cylinder powers of -1.71�Â�±1.18D. Each patient received UBM and a routine examination before implantation of the ICL V4c. A routine postoperative follow-up was performed to observe changes in the primary iris or ciliary body cyst ranged from 3 to 18 months.


At the last follow-up, 56.8% of patients achieved the same corrected distance visual acuity as their preoperative measurements. The efficacy index and safety index were 0.95 and 1.11, respectively. 66.7% of the spherical equivalents were between �Â�±0.5D. The postoperative mean spherical equivalents at 1, 3, 6, 12 and 18 months were -0.45�Â�±0.31D, -0.39�Â�±0.29 D, -0.36�Â�±0.30D, -0.39�Â�±0.38D and -0.48�Â�±0.23D (P=0.789); The vaults were 516�Â�±140�Î�¼m, 548�Â�±124�Î�¼m, 498�Â�±133�Î�¼m, 582�Â�±161�Î�¼m and 557�Â�±110�Î�¼m (P=0.355). There were no changes in size, number or position of the iris, ciliary body cysts.


ICL V4c implantation is safe and effective for highly myopic patients with peripheral primary iris and ciliary body cysts. The cysts did not change after operation.

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