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A pinguecula is a common, non-cancerous growth of the mucous membrane lining the eyeball and underside of the eyelids (conjunctiva).


A pinguecula appears as a small, yellowish lesion derived from the conjunctiva. It can appear on either side of the cornea, but usually appears on the nasal side. It may increase in size over many years. The cause is unknown, but chronic sunlight exposure and eye irritation may contribute to its development. Welding is a significant occupational risk.


The main symptom is a yellow or white nodule on the conjunctiva near the cornea.

Exams and Tests

An eye examination is often sufficient to diagnose this disorder.


Usually no treatment is required. Lubrication with artificial tears and sometimes the temporary use of mild steroid eye drops can be helpful. Rarely, it may need to be removed for discomfort or cosmetic reasons.

Outlook (Prognosis)

This condition is benign (non-cancerous) and the outlook is good.

Possible Complications

Excessive growth may extend over the cornea and impair vision.

When to Contact a Medical Professional

Call for an appointment with your health care provider if the size, shape, or color of a pinguecula changes.


Prevention is unknown. It may help to use good quality sunglasses and avoid eye irritants.

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