Corneal ulcer (patient information)

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What is a corneal ulcer?

A corneal ulcer is an erosion or open sore in the outer layer of the cornea, which is the transparent area at the front of the eyeball. It is associated with infection.

What are the causes of a corneal ulcer?

Corneal ulcers are most commonly caused by an infection with bacteria, viruses, fungi or parasites. Other causes include:

• Abrasions (scratches)
• Foreign bodies in the eye
• Inadequate eyelid closure
• Severely dry eyes
• Severe allergies
• Various inflammatory disorders

Contact lens wear, especially soft contact lenses worn overnight, may cause a corneal ulcer.

Herpes simplex keratitis is a serious viral infection that may cause repeated attacks that are triggered by stress, exposure to sunlight, or any condition that impairs the immune system.

Fungal keratitis can occur after a corneal injury involving plant material, or in immunosuppressed people. Acanthamoeba keratitis occurs in contact lens users, especially those who attempt to make their own homemade cleaning solutions.

Where to find medical care for a corneal ulcer

Directions to Hospitals Treating yourdisease

Sources

http://www.nlm.nih.gov/medlineplus/ency/article/001032.htm