BARRAQUER, BARCELONA, ISM / SCIENCE PHOTO LIBRARY BARRAQUER, BARCELONA, ISM / SCIENCE PHOTO LIBRARY
Corneal ulcer. Close-up of the left eye of a patient with a corneal ulcer (cloudy area). The cornea is the transparent front part of the eye. A corneal ulcer (ulcerative keratitis) is a form of inflammation of the cornea. It is usually due to some form of infection.
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