Analyzing the Relationship Between IOL Fixation and PCO Prevention

TL;DR

This study explores how the way intraocular lenses are fixed in the eye affects the risk of posterior capsular opacification, a common complication after cataract surgery.

Contribution

The study compares capsulotomy rates between two IOL fixation types to assess their impact on PCO risk.

Findings

FEMTIS IOLs showed lower capsulotomy rates (3.1%) compared to in-the-bag LENTIS lenses (4.7%) at 12 months.

Capsulotomy fixation may reduce the space for lens epithelial cell migration, potentially lowering PCO risk.

Early evidence supports anterior fixation as a strategy to improve long-term capsular clarity.

Abstract

Background: Posterior capsular opacification (PCO) remains the most common long-term complication following cataract surgery. This correspondence investigates whether intraocular lens (IOL) fixation type influences PCO risk by comparing Nd:YAG capsulotomy rates between capsulotomy-fixated (FEMTIS) and conventional in-the-bag IOLs with similar material and edge profiles. Methods: A systematic review was conducted. Eligible studies reporting quantitative YAG rates at ≥3 months of follow-up were included. Results: FEMTIS IOLs demonstrated lower capsulotomy rates (3.1% at 12 months) compared to in-the-bag LENTIS lenses (4.7% at 12 months), despite identical optic designs and identical material. Conclusions: This suggests that capsulotomy fixation may promote closer capsule–optic contact and reduce the potential space for lens epithelial cell migration. While data are limited by study heterogeneity and follow-up duration, early evidence supports anterior fixation as a potential strategy to reduce PCO risk and improve long-term capsular clarity. Further prospective studies are warranted. Limitations include heterogeneous study designs, relatively short follow-up, and reliance on Nd:YAG capsulotomy as the sole endpoint.

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