Most often, people notice a “blemish” on the white of their eye, which gradually enlarges over time. If the blemish becomes raised, like a little “lump”, there may be concern that a cancer is developing. (Cancers on the surface of the eye are very rare, and mostly easily distinguished from pterygium by careful examination).

Other symptoms include:

Persistent redness

Irritation and soreness

Blurring of vision (rarely)