Opacification of Hydrophilic Acrylic Intraocular Lens

Hong, Ji Won; Roh, In Ho; Bae, Sun Ryang

Case Report

Korean Journal of Optometry and Vision Science 2007;6(1):68-71.
Published online December 20, 2007.

백내장 수술 시 삽입된 친수성 아크릴 인공수정체의 혼탁 2예

홍지원, 노인호, 배선량

Department of Ophthalmology and Visual Sciences, The Catholic University of Korea College of Medicine, Daejeon, Korea

Opacification of Hydrophilic Acrylic Intraocular Lens

Ji Won Hong, In Ho Roh, Sun Ryang Bae

Abstract

Purpose
To report the first case of opacification of hydrophilic acrylic IOL 570H (Rayner^Ⱂ, England). Methods: Two hydrophilic acrylic IOLs (Rayner^Ⱂ, England) were explanted from two patients who had developed decreased visual acuity after phacoemulsification and IOL implantation. Two IOLs were examined by gross and light microscopy, Alizarin red stain, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Results: The two explanted IOLs showed identical characteristics of opacification. Visual examination detected opacification on the optic center but haptic was not opacified. The Alizarin red stain showed that the stains located under the surface (anterior side) of the IOL. Scanning electron microscopy showed particles under the surface. As a result of observing carbon, oxygen, and silicone using EDS spectrum analysis for both opacified and normal IOLs, the amount of oxygen in the opacified IOLs was much higher. Conclusions: The observation of no calcium during the EDS spectrum analysis compounded with a higher oxygen strongly indicates oxidation of some sort. Therefore, additional research is required in order to identify the cause of opacification of the hydrophilic acrylated IOL 570H. (Korean J Optom Vis Sci 2007;6(1):68-71)

Key Words: Acrylic IOL, Cataract, Opacification, 570H