Refraction in School Children.

Hong, Soon Kak; Kim, Sung Duk; Lee, Jong Woo

Original Article

Journal of the Korean Ophthalmological Society 1967;8(2):8-11.
Published online January 1, 2001.

Refraction in School Children.

Soon Kak Hong, Sung Duk Kim, Jong Woo Lee

Department of Ophthalmology, Yonsei Univeresity, College of Medicine, Seoul, Korea.

학동의 (學童) 굴절상태 (屈折狀態)

Abstract

611 children (297 boys and 314 girls) of a primary school were determined under 2% cyclogyl. (1) Among 611 children, refractive error was 70.46 % and emmetropia. 29.54 %. (2) As to the distribution of refractive errors, 72.47 % were hyperopic and 27.53 % myopic Hyperopia was more common than myopia. (3) Hyperopic refractive error was increased until 7 years of age. Since then it has been decreased 8.74 % yearly. Myopic refractive error has been increased 8.14 % yearly since 8 years of age. (4) The refractive errors were more frequent in women (37.81) than men (32.65 %) (5) Refractive errors were numerous around the age of 11. (24.77 %). (6) The degree of refractive errors varied, but in the great majority was less than 3 diopters. (7) As to the type of astigmatism; 59.42 % were with the rule and 39.94 % were against the rule.