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KMID : 1159320070090030261
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Korean Journal of Vision Science
2007 Volume.9 No. 3 p.261 ~ p.267
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Study on the Reliability Evaluation of Refractive Power in Spectacle Lens
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Sung A-Young
Kim Tae-Hun
Ye Ki-Hun
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Abstract
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This study is to investigate the refractive power of spectacle lenses, which are being sold in Korea and evaluate reliability of refractive power. We used samples of three hundred and ninety eight spectacle lenses of eight company in total. Refractive indices of each samples which were used in experiment were medium index (1.55~1.56), high index(1.60~1.61) and extra high index(1.67). We tested the errors and conformity of refractive power of spectacle lenses by using the medical instrument standard of KFDA. We found that they deviated from the permitting value in many spectacle lenses and the conformity of refractive power was 81.61% in total spectacle lenses.
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KEYWORD
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spectacle lens, refractive power, refractive index, error of refractive power
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