Color discrimination ability of young females wearing sunglasses

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  • サングラス装着時における若齢女性の色彩弁別能力
  • サングラス ソウチャクジ ニ オケル ジャクレイ ジョセイ ノ シキサイ ベンベツ ノウリョク

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The wearing of sunglasses with UV-filtering lenses to protect our eyes from ultraviolet radiation is recommended. This study was conducted to examine the relationship between the color of sunglass lenses and color discrimination. We performed the 100 Hue Test involving young females to examine their ability to discriminate colors. The illumination intensity was set to approximately 5,000lx, and three colors of lenses were used in the test. We compared deviation values between subjects wearing smoke color, blue, brown, and no sunglasses, and no significant difference was observed. Then we compared mean deviations for each of 100 hues on comparison of the brown and no sunglass groups, significant differences were identified for nine hues. Particularly in the purple blue (PB) field, the mean deviation was lower in the brown group, which indicates that sunglasses with brown lenses are more effective in discriminating purple and blue colors. No marked difference was noted in deviations between the red purple (RP) and blue green (BG) fields, and deviations in the brown group were significantly greater in both (RP and BG) cases, which is in line with the results of previous studies of deviations in the elderly.

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