A pingueculum is a yellowish patch or bump on the white of the eye, most often on the side closest to the nose. It is not a tumor, but an alteration of normal tissue resulting in a deposit of protein and fat. Unlike a pterygium, a pingueculum does not actually grow onto the cornea. A pingueculum may also be a response to chronic eye irritation or sunlight.
No treatment is necessary unless it becomes inflamed. An pingueculum does not grow onto the cornea or threaten sight. If particularly annoying, a pingueculum may on rare occasions be surgically removed, but the post-operative scar may be as cosmetically objectionable as the pingueculum.