A Pterygium is a wing shaped growth of the conjunctiva that extends over the cornea.  It is associated with ultraviolet light exposure.  While it is a benign growth, it can cause a number of bothersome symptoms including: redness, irritation, visual distortion, decreased vision, and cosmetic deformity.  Conservative treatments and topical medication are initially used to see if sympoms can be improved.  If unsuccessful, surgical excision can be considered.  The removal of a pterygium is done on an outpatient basis.