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https://doi.org/10.3938/NPSM.67.1129
Comparison of Contrast Sensitivity and Color Distinctions Between Ordinary Color Lenses and Mirror-Coated Color Lenses
New Physics: Sae Mulli 2017; 67: 1129~1137
Published online September 29, 2017;  https://doi.org/10.3938/NPSM.67.1129
© 2017 New Physics: Sae Mulli.

Mi-Suk JU, Hyun Mee LEE*

Department of Optometry & Vision Science, Catholic University of Daegu, Gyeongsan 38430, Korea
Correspondence to: hmlee@cu.ac.kr
Received May 4, 2017; Revised August 8, 2017; Accepted August 9, 2017.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The contrast sensitivity and the color discrimination power of a general colored-tint lens and a mirror-coated color lens according to illumination change were investigated. The subjects were 30 peoples with visual acuity greater than 0.7. In order to compare the contrast sensitivity and the color distinction according to the illuminations of tint and mirror lens, we tested four tint lenses and a colorless and gray lens at 200 lux and 900 lux. When the visual acuities of the tinted lens and the colorless lens were compared, the 10% low contrast chart was influenced by the illumination. When the mirror lens was compared with the gray lens, the visual acuity and the contrast sensitivity were influenced by the illumination change, but the color discrimination power was not influenced by the illumination. Mirror lenses had much lower contrast sensitivity at lower illumination than higher illumination. The coating color of the mirror lens did not affect the visual acuity or the contrast sensitivity.  
PACS numbers: 42.79.Bh, 42.15.Eq
Keywords: Tinted lens, Mirror-coated lens, Contrast sensitivity, Color Distinctions, Illumination


September 2017, 67 (9)