A member asked:

What might cause a white donut-like spot to appear on my cornea?

A doctor has provided 1 answer

Arcus senilis: The arcus senilis is a donut ring of lipid deposition at the edge of the cornea. This is an arc, and not a spot. You can get donut like spots as a healing response to previous trauma. I know of no pathology that causes such spots so this is probably a benign event for you.

Answered 5/13/2013

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