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KMID : 1159320150170030276
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Korean Journal of Vision Science
2015 Volume.17 No. 3 p.276 ~ p.288
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The Study on Vision Screening Tests for Preschool-aged Children
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Joo Jung-Hwa
Lee Kyu-Byung
Mah Ki-Choong
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Abstract
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Purposes: To suggest a new vision screening test with high validity for preschool children, Korean and Japanese vision screening tests were conducted on preschool children and then their results were analyzed and compared.
Methods: The vision screening tests that are currently used to screen preschool children in Korea and Japan were performed on 307 preschool children (age, 3?6 years; 614 eyes), and their unaided visual acuity were measured by the standard visual acuity chart.
Results: The agreement of the results of Korean and Japanese vision screening tests was low (k = 0.40, p < 0.001), and the used acuity chart was found to be a major factor related to the decision of pass or fail. While the agreement of the results between a standard visual acuity chart and the acuity chart used Korean vision screening test was low (k = 0.27, p < 0.001), but the agreement of the results between a standard visual acuity chart and the Japanese screening test was high (k = 0.89, p < 0.001). The specificity of the decision by visual acuity in Korean vision screening test was
high (100%), and the sensitivity was low (≤ 17.1%). However, when Landolt’s ring chart and different age-specific visual acuity criteria were applied, the sensitivity and specificity were 100.0% and 93.9% for 3-year-olds (criterion; 0.5 VA), 97.3% and 96.7% for 4-year-olds (criterion; 0.7 VA), 85.4% and 99.1% for 5-year-olds (criterion; 1.0 VA), and 88.9% and 100.0% for 6-year-olds (criterion; 1.0 VA), respectively.
Conclusion: To improve the sensitivity and specificity of the current Korean vision screening test for preschool children, there is considered that the figure chart has to be replaced by the Landolt’s ring chart and age-specific visual acuity criteria need to be established.
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KEYWORD
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preschool-aged children, Vision screening, age-specific visual acuity criteria, Landolt’ ring chart
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