Cornea Infections
The cornea is the clear tissue at the front of the eye. A corneal ulcer is an open sore in the outer layer of the cornea. It is often caused by infection. At first, a corneal ulcer may seem like conjunctivitis, or pink eye.
Causes
Corneal ulcers are most commonly caused by an infection with bacteria, viruses, fungi, or a parasite.
- Acanthamoeba keratitis occurs in contact lens users. It is more likely to happen in people who make their own homemade cleaning solutions.
- Fungal keratitis can occur after a corneal injury involving plant material. It may also occur in people with a suppressed immune system.
- Herpes simplex keratitis is a serious viral infection. It may cause repeated attacks that are triggered by stress, exposure to sunlight, or any condition that lowers the immune response.
