Hovis J K
School of Optometry, University of Waterloo, Ontario, Canada.
Optom Vis Sci. 1997 Apr;74(4):222-30. doi: 10.1097/00006324-199704000-00024.
This study reports on the effectiveness of long wavelength pass filters dispensed as tinted spectacles as an aid for individuals with congenital red-green color vision deficiencies. The effectiveness of the filters was evaluated by the performance on a series of clinical color vision tests and a questionnaire after the subjects had tried the lenses for 1 week. The lenses improved performance on color vision tests that required discrimination between large color differences, particularly between red and green hues. However, performance was degraded on tests which required fine color discrimination or used colors that were located parallel to the tritan confusion axis. The improved performance on certain tests was primarily based on brightness artificats induced by the filters, whereas the degraded performance on the other tests was due to the absorption of short- to midwavelength light by the filters. A slight majority (56%) of the subjects rated the filters as being moderate to highly effective in improving their color discrimination. Nevertheless, only 17% were interested in actually purchasing a pair. Common reasons for rejecting the filters were the color distortions produced by the red filters and fewer colors were actually perceived when wearing the filters.
本研究报告了作为有色眼镜分发的长波长通滤光片对先天性红绿色觉缺陷患者的辅助效果。在受试者试用镜片1周后，通过一系列临床色觉测试的表现和一份问卷对滤光片的效果进行了评估。这些镜片在需要辨别大颜色差异的色觉测试中，特别是在红色和绿色色调之间，提高了表现。然而，在需要精细颜色辨别的测试中，或使用与蓝黄色混淆轴平行的颜色的测试中，表现下降。在某些测试中表现的提高主要基于滤光片引起的亮度伪像，而在其他测试中表现的下降是由于滤光片对短至中波长光的吸收。略超过半数（56%）的受试者认为滤光片在改善他们的颜色辨别方面具有中等至高度有效性。然而，只有17%的人有实际购买一副的意愿。拒绝滤光片的常见原因是红色滤光片产生的颜色失真，以及佩戴滤光片时实际感知到的颜色减少。
