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http://dx.doi.org/10.14479/jkoos.2016.21.1.47

Change of Contrast Sensitivity Induced by Tinted Spectacle Lens  

Seo, Jae-Myoung (Dept. of Optometry, Gwangyang Health Sciences University)
Publication Information
Journal of Korean Ophthalmic Optics Society / v.21, no.1, 2016 , pp. 47-51 More about this Journal
Abstract
Purpose: The purpose of this study was to investigate the change of contrast sensitivity by prescribing tinted lenses and to provide the clinical manual. Methods: Contrast sensitivity was measured for twenty adults with normal vision while they wore yellow, orange and green tinted lenses. To measure contrast sensitivity, the 5 spatial frequencies (2, 4, 6, 8 and 10 cpd) were used for 33 ms and 233 ms, respectively. Results: The contrast sensitivity was overall higher with 233 ms than 33 ms (p<0.05). The peaks of contrast sensitivity with 33 ms and 233 ms were 1.75 log unit with the yellow lens and 1. 85 log unit without the color respectively. However, there was no significance between the yellow and orange tinted lens (p>0.64) Conclusions: Yellowish tinted lens that reduces chromatic aberration and the scattering is prescribed for the various purposes to improve visual functions. Before prescribing tinted lens, identifying characteristic of user and tinted lens for cut off wavelengths is recommended.
Keywords
Tinted lens; Color vision; Cut off wavelengths; Spatial frequency; Contrast sensitivity; Improvement of visual function;
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