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Change in capsulorhexis area after cataract surgery

Poster Details

First Author: M.Nagata JAPAN

Co Author(s):    H. Matsushima   T. Senoo                 

Abstract Details


Evaluation of capsulorhexis opening area in two different hydrophobic acrylic intraocular lenses (IOLs).


Department of Ophthalmology, Dokkyo Medical University, Tochigi, Japan.


The study was conducted on 69 eyes that had undergone cataract surgery. ZCB00V (AMO) or FY-60AD (HOYA) were randomly selected and implanted after phacoemulsification. Anterior retro illumination images were photographed using slit lamp and EAS1000 (NIDEK) at 1 weeks, 1 month, 3 months and 6 months postoperatively. Capsulorhexis opening area were analyzed and the ratios of area were compared. After that, fibrosis of anterior capsule were also measured using area analysis software (Area Q, S-Tech) after 3 months postoperatively. Unpaired t-test was used for statistically analysis.


Reduction rate of capsulorhexis opening area were 0.25±2.36% (ZCB00V) and 5.44±10.15% (FY-60AD) after 6 months postoperatively. There were statistically significance (P=0.01). The area of fibrosis in anterior capsule were 16.90±8.34% (ZCB00V) and 62.24±21.32% (FY-60AD). There were statistically significance, too (P=0.01).


The shrinkage of capsulorhexis were different between two types of hydrophobic acrylic IOLs. The increase of fibrosis is the main mechanism for the capsulorhexis shrinkage.

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