Many times, a pterygium does not cause symptoms. However, an inflamed or enlarged pterygium may cause redness and inflammation. A pterygium can grow onto the cornea (the clear, outer layer of the eye). This can distort the shape of the cornea, causing a condition called astigmatism. Symptoms of pterygium may include: Burning Gritty feeling ItchingContinue reading “A growth on the eye”