Dain Stephen J
Optics and Radiometry Laboratory, School of Optometry and Vision Science, The University of New South Wales, Sydney, Australia.
Vis Neurosci. 2006 May-Aug;23(3-4):685-94. doi: 10.1017/s095252380623356x.
A previous study identified a significant metamerism in the several editions of the Hardy-Rand-Rittller pseudoisochromatic plates (HRR) but did not proceed to quantify the consequences of that metamerism (Dain, 2004). Metamerism arises from two sources and is almost inevitable when a printed color vision test is reproduced in several editions. Metamerism has two consequences; these are illuminant/source-based changes in performance and changes in performance with observer (less well known) when assessing anomalous trichromats. This study addresses the effects of illuminant/source and observer metamerism on the fourth editions of HRR. Groups of colors intended to lie on a dichromat confusion line generally remain on a confusion line when the source id changed. The plates appear to be resistant to each form of metamerism, perhaps because the features of the spectral reflectance are similar for figure color and background gray. As a consequence, the clinician needs to be less concerned about using a non-recommended source than was previously believed.
先前的一项研究发现，哈迪-兰德-里特勒假同色图（HRR）的多个版本中存在显著的同色异谱现象，但并未进一步量化该同色异谱现象的影响（戴恩，2004年）。同色异谱现象有两个来源，当印刷的色觉测试以多个版本复制时，这种现象几乎不可避免。同色异谱现象有两个后果；一是基于光源的性能变化，二是在评估异常三色视者时观察者导致的性能变化（鲜为人知）。本研究探讨了光源/光源和观察者同色异谱现象对HRR第四版的影响。当光源改变时，旨在位于二色视混淆线上的颜色组通常仍处于混淆线上。这些图似乎对每种同色异谱形式都具有抗性，这可能是因为图形颜色和背景灰色的光谱反射率特征相似。因此，临床医生不必像以前认为的那样担心使用不推荐的光源。
