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KMID : 0381219880200020230
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Journal of RIMSK
1988 Volume.20 No. 2 p.230 ~ p.236
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A Study of Prevailing Features and Causes of Myopia and Visual Impairment in Urban School Children
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Kim Jae-Chan
Koo Bon-Sool
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Abstract
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In order to elucidate the present features of visual impairments related to refractive errors including myopia
and causative factors of myopia among urban school children, visual acuity, refractive components on the myopia, and socioenvironmental factors were examined among 4,004 children’s in primary, middle and high school in Seoul.
It was conceived that the results were facilitated for the future improvements of the Eye Health Plan for the school children in this country.
This study reveals that visual impairments and prevalence of myopia increase with the school grade(age), and progression of myopia begins earlier in girls than boys.
The progress of myopia is closely related with elongation of ocular axial length along with vitreous A-P length and compensatory reduction of radius of corneal curvature which were more apparent in mypia of -0.5D -5.0D than the group of over -5.OD.
According to the analysis of ancillary questionnaire, we have got a conclusion that it is statistically significant that the myopization of the ocular structure appeared susceptible with the socio-environmental factors such as eating habits. T.V. watching period & distance, reading hours, distance & type of illumination, and school achievement, which are mainly related to near work.
From the results, it is deducible that by improving such environmental factors the myopia in some proportion would be preventable especially in younger children.
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