Tuck J P, Long G M
Department of Psychology, Villanova University, PA 19085.
Ophthalmic Physiol Opt. 1990 Apr;10(2):195-9. doi: 10.1111/j.1475-1313.1990.tb00975.x.
The present work extends the findings of previous efforts examining the comparability of current colour-screening tests. Several popular tests are shown to differ greatly in the performance exhibited by colour-normal observers as well as in their differential sensitivity to experimental manipulations of viewing duration and viewing distance. Those tests designed to identify yellow-blue dichromacy are especially sensitive to the manipulation of viewing distance, which is interpreted as reflecting 'small-field tritanopia' and the asymmetry in retinal density of the three cone types. These findings are discussed in terms of factors that influence the comparability of current colour-screening devices and the particular need for close adherence to standardized conditions with such instruments.
本研究扩展了先前关于检验当前颜色筛选测试可比性的研究结果。结果表明，几种常用测试在颜色正常观察者所表现出的性能方面，以及在对观看持续时间和观看距离的实验操作的差异敏感性方面，存在很大差异。那些旨在识别黄蓝二色视异常的测试对观看距离的操作尤为敏感，这被解释为反映了“小视野蓝色盲”以及三种视锥细胞类型在视网膜密度上的不对称性。本文根据影响当前颜色筛选设备可比性的因素以及使用此类仪器时严格遵守标准化条件的特殊需求，对这些发现进行了讨论。
