Effect of intraocular lens edge profile on posterior capsule opacification after extracapsular cataract surgery in a developing country

Abstract

Sophisticated image analysis techniques can be used in developing countries to quantify PCO. Using extracapsular surgery, square-edged PMMA IOLs reduced the PCO area and severity compared with an identical round-edged IOL; however, the differences were not as marked as those reported with phacoemulsification. This may be due to the difficulty of performing a capsulorhexis that lies on the IOL surface in this situation. Nevertheless, square-edged IOLs offer a potential benefit for extracapsular surgery in the developing world.

Fellow-eye comparison of posterior capsule opacification with AcrySof SN60AT and AF-1 YA-60BB blue-blocking intraocular lenses

“…Numerous studies [5][6][7][8][9][10][11] report significantly lower PCO rates with square-edged optics than with roundedged optics. Both IOLs in our study are marketed as having square-edged optics.…”

“…Although the pathogenesis is multifactorial, affected by patient factors 1 and surgical technique, [2][3][4] IOL design has a significant role in the prevention of PCO. Sharp-edged optics, [5][6][7][8][9][10][11][12][13] haptic design, 12,13 optic size, 14,15 speed of capsule bend formation, 16 and possibly IOL material 9,17 have an influence on the development of PCO after surgery, and it is important that any new IOL maintain good PCO performance.…”

The 2014 Bowman Lecture—Bowman’s and Bruch’s: a tale of two membranes during the laser revolution

“…94 They have for some time played a role in the management of PCO with the advent of the YAG laser. 95 Changes in intraocular lens materials and lens design, particularly edge profiles, have significantly reduced the instance of PCO in adults; 96 however, the problem is still significant in children. The wound healing capacity of the lens epithelial cells in paediatric cases almost always leads to multiple procedures.…”

Influence of Intraocular Lens Material and Eye Axial Length on Posterior Capsule Opacification Dynamic Rate and Frequency

“…Большинство исследователей сходятся во мнении, что частота развития вторичной катаракты во многом определяется как материалом, так и дизайном ИОЛ [8,9,10,11,12,13,14,15,16,17]. Наименьшее количество по-мутнений задней капсулы (1-4%) отмечено при имплан-тации ИОЛ из гидрофобного акрила [9,10,18,19,20,21].…”