Pterygium & Pinguecula
Pterygium (pronounced tur-Ij-ee-um) and pinguecula (pronounced pin-GWEK-yoo-la) are growths on the cornea (the clear front window of the eye) and the conjunctiva -- the thin, filmy membrane that covers the white part of the eye (sclera).
Both types of growths are believed to be caused by dry eye and environmental elements such as wind, dust and ultraviolet light (UV).
WHAT IS THE DIFFERENCE BETWEEN PTERYGIUM AND PINGUECULA?
A pterygium is a growth of fleshy tissue on the conjunctiva that extends over the cornea (the clear front window of the eye). This growth may remain small or grow large enough to interfere with vision.
A pinguecula is a yellowish patch or bump on the conjuctiva, most often on the side closest to the nose. It is a change in the normal tissue that results in a deposit of protein, fat and/or calcium. It is similar to a callus on the skin.
Symptoms of both pterygium and pinguecula can range from mild to severe and may include:
- Redness and/or inflammation--especially during the growth of a pterygium
- Blurred vision
- Irritation
- Dryness
- Itching
- Burning
- Gritty feeling
- Feeling of having foreign materials in your eye
HOW ARE PTERYGIUM AND PINGUECULA TREATED?
In many cases, no treatment is needed. When a pterygium or pinguerula becomes red and irritated, eyedrops or ointments may be used to help reduce inflammation. If they grow large enough to threaten sight or cause persistent discomfort, they can be removed surgically. They are also sometimes removed for cosmetic reasons.
Despite proper surgical removal, pterygium or pinguecula may return. Surface radiation or medications are sometimes used to help prevent recurrences. However, the best way to avoid recurrences is to limit exposure to the evironmental factors that contribute to their growth. This includes:
- Adequately protecting your eyes from excessive UV light with proper sunglasses
- Protecting your eyes in dry, dusty conditions with proper eyewear
- Applying artificial tears to your eyes in dry condition
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