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KMID : 1011420140190040493
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Journal of Korean Ophthalmic Optics Society
2014 Volume.19 No. 4 p.493 ~ p.498
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The Visual Distribution Map Based on the Geographic Information System for Ocular Health State
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Kim Hyo-Jin
Kim Hyi-Jin
Park Chang-Won
Lee Eun-Hee
Kim Hee-Ju
Lyu Jung-mook
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Abstract
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Purpose: This study utilized the Geographic Information System (GIS) which is one of the representative methods for describing visual distribution, to show the distribution of visions of middle and high school students in 16 cities or provinces in Korea.
Method: The data of National Health and Nutrition Examination Survey (NHANES) were analysed from 2009 to 2011 and designed a population-based cross-sectional study. The subjects were total 1,049 students at the age of 13 to 18 and uncorrected vision was provided. Male subjects were 549 (52.3%) and female subjects were 500 (47.7%). Subjects were divided into 16 cities or provinces and average vision of regions were analysed. the differentials of vision among the regions were analysed by as a spatial analysis method.
Results: The average uncorrected vision were significant difference by sex (p=0.001). However male and female student groups’ average vision indicated no statistically significant difference by region in those 16 cities and provinces. In order to show the differentials of middle and high school students’ vision by region with a visual distribution method, the GIS was utilized for mapping.
Conclusions: The differentials of vision among regions by GIS provide a visually effective distribution map.
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KEYWORD
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Middle school students, High school students, Visual acuity, Region, Geographic information system
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