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Square‐edge polymethylmethacrylate intraocular lens design for reducing posterior capsule opacification following paediatric cataract surgery: initial experience
Author(s) -
Brar Gagandeep S,
Grewal Dilraj S,
Ram Jagat,
Singla Mohit,
Grewal Satinder Pal S
Publication year - 2008
Publication title -
clinical and experimental ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 1442-6404
DOI - 10.1111/j.1442-9071.2008.01818.x
Subject(s) - medicine , posterior capsule opacification , phacoemulsification , intraocular lens , ophthalmology , cataract surgery , surgery , intraocular lenses , capsulotomy , lens (geology) , visual acuity , petroleum engineering , engineering
A bstract Purpose: To compare the incidence and severity of development of posterior capsule opacification (PCO) following implantation of square‐edged polymethylmethacrylate (PMMA) or hydrophobic acrylic intraocular lenses (IOLs) following paediatric cataract surgery. Design: Prospective, consecutive, interventional, comparative, randomized and cross‐sectional study of 40 eyes of 32 children aged between 4 and 12 years who underwent phacoemulsification and posterior chamber IOL implantation. Methods: The patients were randomized into two groups of 20 eyes each. Group 1 eyes received a square‐edge hydrophobic acrylic IOL (Acrysof SA 60 AT, Alcon Surgical, Fort Worth, Texas), and Group 2 eyes received a square‐edge single‐piece PMMA lens (Aurolab SQ 3600 Aurolab IOL Division, Madurai, India) in the capsular bag. No eye underwent a primary posterior capsulotomy. The PCO density was evaluated on slitlamp retroillumination photographs by using POCOman software at 3, 6, 9 and 12 months post surgery. Results: The average percentage PCO on POCOman analysis was 51.23 for Group 1 and 49.49 for Group 2 ( P = 0.09), and the average PCO severity grade was 1.34 in Group 1 and 1.12 in Group 2 ( P = 0.08). Visual axis remained clear in 14 of 20 eyes with the acrylic lens as compared with 13 of 20 eyes with the PMMA lens. ( P = 0.32). Conclusions: Square‐edge PMMA IOLs offer a significant cost advantage over acrylic lenses at similar rates of PCO formation following paediatric cataract surgery, which is of significant value in developing countries.