Pterygium

Overview

A pterygium is a noncancerous, triangular growth that may occur on one or both eyes. It's more common in people who spend a lot of time in the sun, such as people who work outdoors.

Symptoms

The painless growth may be slightly raised and contain obvious blood vessels. It may cause irritation and possibly affect vision.

Treatments

Treatment usually isn't necessary. Eyedrops or surgery may help in severe cases.