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KMID : 1011420090140010001
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Journal of Korean Ophthalmic Optics Society
2009 Volume.14 No. 1 p.1 ~ p.7
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Comparison of Progressive Addition Lenses Standards
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Moon Byeong-Yeon
Yu Dong-Sik
Paik Sun-Mok
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Abstract
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Purpose: To improve the quality of Korean progressive addition lenses, we measured the optical and geometrical elements of them and evaluated their qualities.
Methods: We have measured the refractive power, the thickness at optical center and prism power for home and foreign progressive addition lenses which were distributed in the domestic market, and then have done a comparative analysis according to international standards.
Results: The qualities of Korean progressive addition lens were on an equal footing with famous foreign brand products, but they were out of tolerance in a few cases.
Conclusions: The careful attention is required to progressive addition lens, therefore, it is considered that more precise quality control is an essential element to strength the competitiveness of Korean products in the world market.
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KEYWORD
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Progressive addition Lens, Refractive power, ISO
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