The cornea is the clear tissue that covers the front of your eye. It lets light into the eye, helping you focus and see clearly. If your cornea is injured, or you have a disease or inherited condition, it may become cloudy, distorted or scarred. If this happens, light cannot reach the rest of your eye as it normally does. This causes vision problems, including blindness. If your cornea is injured or diseased, it can be very painful.  For some people, a corneal transplant is the right solution.

Read more about corneal transplants