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KMID : 0376219830200010035
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Chonnam Medical Journal
1983 Volume.20 No. 1 p.35 ~ p.43
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Study of Visual Acuity in Middle School Student
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Abstract
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This study is the visual acity and the refractive state of all in middle school in the farming village. We examined to 594 persons (334 boys, 260 girls) at the beginning of a school year, and to 579 persons (325 boys, 254 girls) at the end of a school year.
It is the comparison of the differences in sex, grade, and time (at the beginning and the end of _ a school year).
The results are as follows.
1. There was higher incidence of myopic eyes at the end of a school year (12.8% in male and 13.2% in female at the end of a school year, 5.8% in male and 7.5 j in female at the beginning of a school year).
2. The incidence of myopic eyes under the cycloplegic state among the students with a refractive error was higher in male, but the increasing rate of the incidence of the year was higher in female markedly (57.7% in male and 27.8 % in female at the beginning, 60.0% in male and 40.7% in female at the end of a school year).
3. The incidence of myopic eyes increased in proportion to the grade, especially it was marked at the end of a school year.
4. The sexual difference in the incidence of myopic eyes to subnormal visual acuity was insignificant (5.8%: 7.5% at the beginning, 12.8%: 13.2% at the end of a school year). But the incidence of myopic eyes to refractive error eyes under the cycloplegic state was higher in the male group (57.7%: 27.8% at the beginning, 60.0%: 40.7% at the end of a school year).
5. The incidence of pseudomyopia was higher in the beginning of a school year, in the student of the lower grade and in females, especially in those who was in the beginning of a school year.
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