A small opening in the cornea

1.	A small opening in the cornea
Answer» okay broExplanation:A corneal ULCER is a small crater (ulcer) on the front part of the EYE, USUALLY RESULTING from infection. Bacteria, VIRUSES, or fungi can cause a corneal ulcer. People who wear contact lenses are at higher risk for corneal ulcers because infectious agents may get trapped behind a lens. Symptoms of a corneal ulcer include:

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