So Exactly What is a Pterygium?

A Pterygium (known as Carnosidad in Spanish) is a fleshy pink growth of abnormal tissue that begins on the conjunctiva, the skin lining the outside of the eyeball. If the growth stays exclusively on the conjunctiva, it is known as a pinguecula. Pingueculae are common in the general population, often occurring in the 3rd or 4th decade of life. In those living in the tropics, or who belong certain ethnic groups such as Latinos or Pacific Islanders, the fleshy growth extends onto the cornea of one or both eyes. If that occurs, it is then known as a Pterygium, or if more than one is present, Pterygia. The word is of Latin origin and derives from the word for ‘wing’, much like the winged dinosaurs were called pterydactyls. Many people think that it is not possible to develop a Pterygium in Pennsylvania, due to our dearth of sunny days, but though rare in this region they have been known to develop in those who have spent significant time in sunny climes or in individuals who don’t wear solar eye protection or are frequently exposed to blowing dust and wind, particulates or even ice crystals!

A pterygium can act as a nidus for allergic reactions on the surface of the eye, or serve as a substrate for infection or external eye inflammation, all of which can be treated with topical medication. If asymptomatic and not involving the visual axis, a pterygium can often be left alone. However, if the patient experiences worsening vision, ocular irritation, itchiness, a burning sensation, or simply dislikes the appearance, then it may be time to consider removing it. Dr. Steven Vale at InterMountain Eye Associates has been performing pterygium excision surgery for over 20 years with excellent results. Pterygium surgery involves the removal of the abnormal tissue and the grafting of a piece of normal tissue from another part of the external eye or (using a factory sterilized graft material known as amniotic membrane) in place to reduce the risk of pterygium recurrence. Dr. Vale is a very experienced pterygium surgeon and can answer any questions you may have during your comprehensive evaluation.