Pterygia- Causes and treatment

The fleshy growth that often covers the corner of the cornea is called a pterygium. It usually remains small, but may grow to interfere with the center of the cornea and thus decrease vision. The precise cause is not known but ultraviolet light plays a role and at times this causes the growth of the pterygia toward the center of the cornea. In addition to the sunlight, wind, dust and eye irritation are common causes. The growth actually begins on the conjunctiva (lining of the white part or sclera). The condition can be treated with steroid drops but if it becomes large enough it may be surgically removed.