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KMID : 1011420090140010097
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Journal of Korean Ophthalmic Optics Society
2009 Volume.14 No. 1 p.97 ~ p.101
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The Study for Refractive Error of the Westerner in 20s: North America Region
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Lee Young-Il
Hong Jin-Seok
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Abstract
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Purpose: To assess the refractive state of the westerners (male: 44, female: 62) in twenties who visited the A optical shop at Seoul.
Methods: The visual acuity test was performed by the objective and subjective method.
Results: The emmetropia and myoptia were 35 and 177 eyes (83.49%), respectively. About 26.76% of tested males was ametropia. Myopia compound and myopia simple astigmatism were found in 60.56% and 12.68% of tested males, respectively. However, about 43.40% of tested females was ametropia. Myopia compound and myopia simple astigmatism were 49.06% and 7.55% were found in tested females, respectively. As for the equivalent spheric power of myopic abnormal refractive eyes, the -0.5D < spheric equivalent -2.00D was 35.02% of tested westerners, the -2.00D < spheric equivalent -6.00D was 60.45% and anything over the -6.00D was 4.53%. The percentages of with-the-rule, against-the-rule and oblique astigmatism among people with astigmatism were 59.82%, 26.78% and 13.40%, respectively. The average of pupillary distance in male (63.5?.4 mm) was greater than that in female (59.7?.3 mm).
Conclusions: Korean opticians were provided some useful information about making up a prescription for the westerners in twenties by this research.
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KEYWORD
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westerners, emmetropia, myopia, astigmatism, equivalent spheric power, papillary distance
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