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Color vision assessment‐3. An efficient, two‐step, color assessment protocol
Color Research and Application ( IF 1.4 ) Pub Date : 2020-11-25 , DOI: 10.1002/col.22599
John L. Barbur 1 , Marisa Rodriguez‐Carmona 1 , Benjamin E. W. Evans 1
Affiliation  

Color vision tests and multi‐test protocols in current use often fail to detect small changes in red/green (RG) and yellow/blue (YB) color vision due to poor sensitivity. The tests also have low specificity. In this study, we examine how improved understanding of within‐ and inter‐subject variability in RG and YB color vision and accurate assessment of the differences in color thresholds between the least‐sensitive, age‐matched normal trichromats, and the least‐affected deutans and protans can be used to design an efficient color vision screener (CVS) test. To achieve this objective, we examined two extensive data sets from earlier studies and carried out new experiments to provide better estimates of within‐subject variability in color thresholds and to validate the CVS test. The data sets provide essential information on inter‐subject variability, the effects of normal aging on RG and YB thresholds, and the spread in RG color thresholds in deutan and protan subjects. A statistical model was developed to optimize the parameters of the CVS test and to predict the limits of what can be achieved in color assessment. The efficiency and repeatability of the CVS test were then assessed in 84 subjects. The results match model predictions and reveal close to 100% test efficiency. The test takes between 140 and 160 seconds to complete and has close to 100% repeatability. An efficient, “two‐step” protocol based on the initial use of the CVS test followed by full color assessment in only those who fail the CVS test is also described.

中文翻译:

色觉评估-3。高效的两步式颜色评估协议

当前使用的彩色视觉测试和多重测试协议通常由于灵敏度低而无法检测到红色/绿色(RG)和黄色/蓝色(YB)彩色视觉的微小变化。测试也具有低特异性。在这项研究中,我们研究了如何更好地了解RG和YB色觉的受试者内部和受试者之间的变异性,以及如何准确评估年龄最小的敏感,年龄匹配的正常三色性和受影响最小的Deutans之间的颜色阈值差异。可以使用Protans设计高效的色觉筛查器(CVS)测试。为了实现这一目标,我们检查了来自较早研究的两个广泛的数据集,并进行了新的实验,以提供对颜色阈值的受试者内部变化的更好估计,并验证了CVS测试。这些数据集提供了有关受试者间变异性,正常衰老对RG和YB阈值的影响以及在Deutan和Protan受试者中RG颜色阈值的分布的重要信息。开发了统计模型以优化CVS测试的参数并预测颜色评估中可以达到的极限。然后在84位受试者中评估了CVS测试的效率和可重复性。结果与模型预测相符,显示出接近100%的测试效率。该测试需要140到160秒才能完成,并且具有接近100%的可重复性。还描述了一种有效的“两步”协议,该协议基于CVS测试的最初使用,然后仅对那些未通过CVS测试的用户进行全色评估。以及在deutan和protan受试者中RG颜色阈值的分布。开发了统计模型以优化CVS测试的参数并预测颜色评估中可以达到的极限。然后在84位受试者中评估了CVS测试的效率和可重复性。结果与模型预测相符,显示出接近100%的测试效率。该测试需要140到160秒才能完成,并且具有接近100%的可重复性。还描述了一种有效的“两步”协议,该协议基于CVS测试的最初使用,然后仅对那些未通过CVS测试的用户进行全色评估。以及在deutan和protan受试者中RG颜色阈值的分布。开发了统计模型以优化CVS测试的参数并预测颜色评估中可以达到的极限。然后在84位受试者中评估了CVS测试的效率和可重复性。结果与模型预测相符,显示出接近100%的测试效率。该测试需要140到160秒才能完成,并且具有接近100%的可重复性。还介绍了一种有效的“两步”协议,该协议基于CVS测试的最初使用,然后仅对未通过CVS测试的用户进行全色评估。然后在84位受试者中评估了CVS测试的效率和可重复性。结果与模型预测相符,显示出接近100%的测试效率。该测试需要140到160秒才能完成,并且具有接近100%的可重复性。还介绍了一种有效的“两步”协议,该协议基于CVS测试的最初使用,然后仅对未通过CVS测试的用户进行全色评估。然后在84位受试者中评估了CVS测试的效率和可重复性。结果与模型预测相符,显示出接近100%的测试效率。该测试需要140到160秒才能完成,并且具有接近100%的可重复性。还介绍了一种有效的“两步”协议,该协议基于CVS测试的最初使用,然后仅对未通过CVS测试的用户进行全色评估。
更新日期:2020-12-20
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