Home > Health Topics > Topics beginning with K > Keratitis - Corneal Ulcers > Overview, Causes, & Risk Factors
Medical References
Diseases & Conditions
Women's Health
Mental Health
Men's Health
Medical Web Links
MOL Site Map
Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
Read more health news
Keratitis - Corneal Ulcers
- Overview, Causes, & Risk Factors
- Symptoms & Signs
- Diagnosis & Tests
- Prevention & Expectations
- Treatment & Monitoring
- Attribution
- View All
Overview, Causes, & Risk Factors
A corneal ulcer is a lesion on the cornea that is usually caused by an infection. The cornea is the clear window on the front of the eye that covers the colored iris and pupil.
What is going on in the body?
Corneal ulcers generally form when the cornea is damaged in some way. The break in the cornea allows organisms to enter and cause an infection. The organisms may be a type of bacteria, virus, or fungus. Allergies or other eye conditions may also cause corneal ulcers.
What are the causes and risks of the infection?
Herpes simplex infection is the most common cause of corneal ulcers in the United States. The virus that causes chickenpox and shingles can also cause corneal ulcers. Many times, bacterial or fungal infections lead to corneal ulcers.
Other causes of corneal ulcers include: