Cornea Focuses Light into the Eye
The cornea is the front clear surface of the eye. Light is focused as it passes through the cornea to enter the eye. Damage to the cornea can occur at any age.
Infection, injury, contact lens abuse, keratoconus and other eye problems, and some general health problems may damage the cornea. This damage may prevent light from entering the eye properly, resulting in decreased vision. It may also cause the surface of the eye to become rough and irregular, which causes pain.