According to the experts at the American Macular Degeneration Foundation, macular degeneration (MD) is a known incurable ocular disease. This eye condition is currently affecting 10 million people in the country.
The cornea is the transparent outer layer at the front of your eye. It covers the iris and the pupil, much like a watch crystal covers the face of a watch. The cornea directs and focuses light onto the lens of your eyes so you can see clearly. When the cornea is injured, infected, or inflamed, a sore can form. This painful sore is what is referred to as corneal ulcer or keratitis.