Definition:
A wedge-shaped growth of the conjunctiva (the surface tissue on the white of the eye) that extends onto the cornea; a pterygium is generally harmless, but it can occasionally become red and inflamed, causing eye irritation. If the pterygium continues to grow over the central cornea it may affect vision or create astigmatism.

Pterygium advancing over the cornea, encroaching on central line of sight.

Treatment:
Doctors Fagadau & Hawk will determine the best treatment depending on the size and extent of the pterygium. They might suggest mild steroid eye drops when it becomes inflamed. With vision loss, or serious discomfort, the pterygium can be surgically removed.

Doctors Fagadau & Hawk perform microscopic pterygium removal at Park Central Hospital. During the procedure, the pterygium is dissected, and some of the surface tissue may be removed to prevent regrowth.

Prevention:
It is believed that prolonged exposure to ultraviolet light may contribute to the formation of pterygia, as it is more common in people who live in tropical climates. Doctors Fagadau & Hawk emphasize this is yet another reason to protect your eyes with sunglasses and a hat when in the sun.

More information:
Digital Journal of Ophthalmology

Photos courtesy of American Academy of Ophthalmology.