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A clinical examination by experienced ophthalmologists was carried out, and the presence of pterygium was diagnosed at the examination. Pterygium was graded clinically by slit lamp examination. Questionnaires were conducted on risk factors. The prevalence of pterygium was high overall Women had a higher rate than men In multivariate analysis, pterygium was independently associated with increasing age odds ratio [OR] 1.
Height, weight, hypertension, diabetes, smoking, and alcohol use history were not associated with pterygium. Purchase this article with an account.
Jump To Alerts User Alerts. You will receive an email whenever this article is corrected, updated, or cited in the literature. You can manage this and all other alerts in My Account. This feature is available to authenticated users only. Get Citation Citation. Get Permissions. Pterygium is a wedge-shaped abnormal fibrovascular growth of conjunctiva that extends onto the cornea. This is a proliferative disorder of the ocular surface, caused by connective tissue remodeling and angiogenesis leading to fibrovascular proliferation.
The pathogenesis and mechanisms, however, are not known. The Yunnan Minority Eye Study YMES is a population-based epidemiologic study on ocular diseases conducted in Yunnan, China, and carried out in three counties with mainly minority populations, including Bai, Yi, and Dai minority nationalities, respectively.
To our best knowledge, no such study has ever been conducted among the adult Bai Nationality. Dali is located in Yunnan-Guizhou Plateau and is known for high winds. Pterygium in Chinese minority nationalities and in such plateau peoples who have high exposure to sunlight and wind has not been well studied.