The cornea is the clear tissue that lays over the iris and pupil of the eye. The cornea works with the lens to help focus images on the retina. Just like any part of the body, injuries can and do occur to the cornea. Injuries to the cornea can be very painful due to the many nerve endings just under the corneal surface. A corneal abrasion is a scratch or scrape on the surface of the cornea. This may occur when something hits your eye, such as a ball, a finger or other object that can hit the face. …
