You are in Medical Library . A triangular fold of tissue that grows from the conjunctiva onto the cornea of the eye. A pterygium is a nonmalignant tumor that frequently grows on the nasal side of the eye. It may occur in both eyes. The cause is unknown, but it may be the result of exposure to ultraviolet light.
Risk factors are exposure to sunny, dusty, sandy, or windblown areas.
It is rare in children. And Tests An eye examination is usually sufficient to diagnose the disorder. Protective glasses should be worn to prevent recurrences in people who work outdoors. The probable outcome is good. Complications recurrence after removal Calling Your Health Care Provider Call for an appointment with your health care provider if symptoms develop.