Common Types of Corneal Diseases
Keratitis generally refers to an inflammation of the corneal tissue. This can result from injury, such as a scratch, or wearing contact lenses for longer than intended. Bacterial infections are common in people who wear contacts, but infections can also be viral, parasitic, or fungal.
Ocular Herpes and Herpes Zoster
Herpes simplex virus 1, the same type of herpes that causes cold sores in and around the mouth, can also cause sores to develop on the surface of the cornea. The herpes zoster virus (which causes chickenpox) can reemerge as shingles and cause blisters or lesions to form on the eye.
The most common type of dystrophy, keratoconus results in progressive thinning of the cornea. Left untreated, the cornea will take on a cone shape and bulge outwards. Fuchs’ and map-dot-fingerprint are two other types of corneal dystrophy.