Sunlight comprises of Ultraviolet (UVA and UVB) radiations which can penetrate the layers of skin and cause damage. These have harmful effects on the eyes also. The human lens of the eye has the ability to filter the UV radiations. But long-term exposure to even low levels of UV radiation can eventually cause changes in the lens, contributing to cataract formation, and age related macular degeneration Blue light also damages the retina.
The AcrySof ReSTOR IOL is designed to have light filtering abilities that approximate the light transmission of the human lens. Like the human lens, the AcrySof IQ and ReSTOR IOLs filter the UV and blue light.
Roshan Eye Care Hospital hence uses Acrysof class of IOLs to replace cataract.