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KMID : 1159320160180040525
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Korean Journal of Vision Science
2016 Volume.18 No. 4 p.525 ~ p.533
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Study on the blue light hazard protection rate of blue light coated lenses
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Song Kyoung-Sek
Joo Seok-Hee
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Abstract
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Purpose: To know the rate of blue light coated lenses' protection, while comparing and analyzing coming from different manufactures and the spherical diopters with standard measuring devices made by overseas and local market were used.
Methods: The blue light coated lenses employed for the test were from 3 different manufacturers; 2 from domestic and 1 from overseas manufacturers with spherical diopter of 0.00 D, -3.00 D and -5.00 D. The measuring devices used were the spectrophotometer, U-4100 from Japan HITACHI and HLM-9000 from Korea HUVITZ company.
Results: U-4100 was used for measuring the rate of blue coated lenses' protection which was in wavelength 415nm. The result showed based on the manufacturers like as D company, C company and N company and following result of the rate of blue coated lenses were 19,7%, 54.9%, and 29.4% at 0.00 D. 20.9%, 55.2%, 33.2% at -3.00 D and 28.3%, 73.1% and 36.1% at -5.00 D.
Conclusions: The rate of blue light coated lenses' protection was different depending on the manufactures and diopters. When an optician is selling blue light coated lenses it would be better if he demonstrates the blue light coated lenses' depending on different visual environment. And it will also help for optician to make more credibility with customers.
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KEYWORD
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Blue light protection rate, Blue light coated lenses, Measuring devices
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