Pinguecula is a growth that develops on the eye. The mostly harmless condition may cause the eyes to feel dry and irritate, and can make it uncomfortable to wear contact lenses.
The precise reasons pinguecula develops are unknown, but the cause is believed to be a combination of ultraviolet radiation from the sun, wind, and dust. It is thought the mixture of factors irritates the conjunctiva, the clear lining of the eyeball, and causes the growths.
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