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KMID : 0383419680090020219
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Korean Modern Medical Journal
1968 Volume.9 No. 2 p.219 ~ p.226
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Refraction in School Children
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洪淳珏/Hong, Soon Kak
李莊宇/蘇經燮/崔斗植/韓景植/尹明照/Lee, Jang Woo/Soh, Kyoung Sub/Choi, Doo Sic/Han, Kyung Sik/Yoon, Myung Cho
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Abstract
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This study was planned to determine the refraction under. 2% cyclogyl in 612, Korean children ;292 boys and 324 girls) of primary school age from 7 to 12 years.
Brightness (illumination) of 9 class rooms among 12 of primary school was measured respectively xith Sight meter (Western model 703-60, type 7, Weston co,) and Sun light illumination meter estern model 756, Weston co.).
1. Among 612 children, refractive error was 75.085o and emmetropia 24.92%.
2. As to the distribution of refractive errores 68.25o were hyperopia and 31.74% myopia. Hyperopia was 41.64% and myopia 19.8%. As to the astigmatism, simple hyperopic was 5,25%, simple myopic 1.95%, compound hyperopic 3.98%, compound my PO-pie 1.13% and 1. miixed astigmation 0.16%
3. Hyperopic refractive error increased until 7 years of age and thereafter it decreased at a rate of change of 0.46D yearly. Myopic refractive errors increased at rate of 0.46D yearly after 8 yrs of age.
4. The refractive errors were more frequent in females (40.83%; 503 eyes) than males Y (34.25%; 422 ´ eyes) .
5. Greatest mumber of children have refractive error at 8 years old.
6. Emmetropia was most frequent at 11 years of age and thereafter tends to decrease. ;Hyperopic refractive errer under 1.00D was 60.22% and myopic refractive error under OOD26. 92%-k
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KEYWORD
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