Pterygium is a pinkish, triangular conjunctival tissue growth that becomes vascularised and invades the cornea of the eye. It typically starts on the cornea near the nose. It may slowly grow but rarely grows so large that it covers the pupil and impairs vision.
The noncancerous, triangular growth may occur on one or both eyes. It's more common in people who spend a lot of time in sunny and dusty conditions, such as those who work outdoors.
The painless growth may be slightly raised and contain obvious blood vessels. It may cause irritation and possibly affect vision.
Treatment usually isn't necessary. Eye drops (lubricants) or surgery may help in severe cases.