A pterygium is a lump of tissue, which grows from the conjunctiva (the thin membrane that covers the white of the eye) onto the cornea (clear central part of the eye). A pterygium can occur in both eyes, usually on the nasal side of the eye.
Anyone can develop a pterygium and their exact cause is unknown, but they are often associated with exposure to ultraviolet radiation and hot, dry environments. Pterygiums are more common in farmers and surfers, and anyone who spends a lot of time outdoors,
In cases where the pterygium is not actively growing onto the cornea and not obstructing your vision, then protecting your eyes from ultraviolet light may often be enough to stabilise its growth. If the pterygium is actively growing onto the cornea and threatening to alter your vision, the only effective treatment is surgical removal by Dr Goodrich under a general anaesthetic during a day surgical procedure.