This document discusses corneal blindness in Bangladesh and eye donation. It notes that over 800,000 people are blind in Bangladesh, mostly due to cataract and corneal disorders. Corneal blindness particularly impacts children and young adults. The cornea is the transparent tissue covering the eye that allows light to enter. Vision is lost if the cornea becomes cloudy due to disease, injury or infection. While blindness cannot always be prevented, sight can be restored through corneal transplantation by grafting a healthy donor cornea. The document encourages eye donation after death so that donated corneas can restore sight to the blind, noting there is a large unmet demand for donor corneas in Bangladesh.