Pterygium is a growth of tissue from the white of the eye onto the cornea. It is related to chronic exposure to sunlight, and is thus more common in the south and in patients with excessive occupational exposure to the sun. Many cases can be managed conservatively with periodic monitoring and eye drops. However, if the pterygium begins to cause astigmatism or threaten the center of the vision, then removal may be appropriate. Dr. Clark has performed many various techniques for pterygium removal, including conjunctival autografts, amniotic membranes and tissue adhesives, and continues to utilize the most currently accepted techniques with the highest demonstrated success rates.