"A cataract is a clouded, dense region that develops in the eye’s lens. When proteins in the eye clump together, the lens cannot transmit clear pictures to the retina, which leads to the development of a cataract. The retina functions by converting signals from the light that enters via the lens. The optic nerve receives the signals from it and delivers them to the brain. This lens g... https://sahyadrihospital.com/videos/what-is-cataract/