First Author: P.Morgan-Warren UK
Co Author(s): A. Smith
Purpose:
Aspects of intraocular lens (IOL) design have been associated with different rates of posterior capsule opacification (PCO) and modern IOLs aim to reduce the development of PCO following cataract surgery. The purpose of this study was to evaluate differences between Nd:YAG posterior capsulotomy rates of acrylic hydrophobic IOLs used in routine cataract surgery.
Setting:
Victoria Eye Unit, Hereford County Hospital, Herefordshire, United Kingdom
Methods:
A retrospective analysis was undertaken of all patients undergoing cataract surgery by a single consultant firm over a three-year period. Patients undergoing Nd:YAG laser posterior capsulotomy were identified from laser clinic records, which included details of the lens implanted at surgery. Capsulotomy rates at 2 years postoperatively were compared for the different IOLs used (chi-squared).
Results:
1292 cataract operations were undertaken during the three-year period, and lenses implanted included AcrySof SN60WF (n=696), Hoya FY60AD (n=315) and Hoya PY60AD (n=254) and others (n=27). 49 eyes (3.8%) underwent posterior capsulotomy within 2 years of surgery. 28 eyes (8.9%) implanted with the relatively round-edged FY60AD lens underwent laser treatment by 2 years, compared to 11 (4.3%) with the sharper square-edged PY60AD lens (p=0.026) and 10 (1.4%) with the one-piece SN60WF (p<0.001) lens.
Conclusions:
The Hoya PY60AD lens has a lower posterior capsulotomy rate than the FY60AD lens at 2 years post cataract surgery. The one-piece AcrySof SN60WF lens has a lower capsulotomy rate than both the three-piece Hoya lenses in the same time period postoperatively. Variations in IOL edge design and material effect may contribute to the different rates observed. FINANCIAL DISCLOSURE?: No
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