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A Study of Pterygium on Cheju Island

Yonsei Medical Journal 1977년 18권 2호 p.151 ~ 156
Kwon Jang-Sool, Choi Ouk,
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 ( Kwon Jang-Sool ) - Yonsei University College of Medicine Department of Ophthalmology
 ( Choi Ouk ) - Yonsei University College of Medicine Department of Ophthalmology

Abstract


Pterygium is said to be a common disease in many countries. The etiology of pterygium has given rise to much discussion anatomic, necplastic, inflammatory
and degenerative theories have been proposed but its geographical incidence makes it almost necessary to assume that environmental irritation must have something to do with its development. It is generally thought that the pterygium is provoked by irritating substances entering the eye. This may be true, but what that substance is remains obscure.
It is a condition found chiefly in the surny, hot, dusty regions of the world, mostly between the latitudes of 37˚ north and south of the equator. The incidence also varies with the amount of exposure to these climatic conditions. It is thus most common in workers out-of-doors: and therefore more among men than woman (at least 2 to 1) except in localities where the exposure of the two sexes is equal.
Cheju Island is located apprcximately between 33˚ and 33˚30´ north latitudes: The climatic conditions of this island are characterized by sunny, high temperature, high winds and humid areas.
We have observed that the inhabitants of the north coast of Cheju Island are frequently affected with pterygia. The 112 cases of clinical pterygia among 969 adult out-patients at the eye clinic of Lazarus Hospital ´ in Cheju City from August 1, 1976 to April 30, 1977 were evaluated statistically. The incidence of pterygium evaluated in Lazarus Eye Clinic was remarkably high (11.56%)-as compared with other reports.

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