Pterygium removal surgery eliminates the abnormal tissue from the cornea and sclera. The older technique used for removing pterygium used to leave a bare hole in then conjunctiva from where the pterygium was removed. But this traditional surgery was not that effective as it resulted in a high rate of pterygium regrowth. The latest technological advancements in pterygium removal surgery have cleared the former glitches. In the new surgery procedure, stitches have been removed altogether as it uses a special kind of surgical glue made from clotting proteins found in human blood. The procedure involves removing the pterygium and replacing it with the tissue.