This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
Pterygium of the conjunctiva and cornea is a benign (non-cancerous) pink lesion that grows from the conjunctiva onto the cornea. They typically start from on the inner surface of the eye, and grow toward the the pupil. Long term exposure to ultraviolet light has been associated with causing this condition. Depending on the size of the pterygium, a person can experience vision problems. Surgical removal of the pterygium is often not needed unless it is causing irritation or vision loss.
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