Protanomaly without darkened red is deuteranopia with rods.
Protanomaly without darkened red is deuteranopia with rods.
复制标题
没有暗红色的红色弱视是带有杆状细胞的绿色盲。
DOI：
10.1016/j.visres.2008.03.001
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发表时间：
2008
期刊：
影响因子：
1.8
通讯作者：
Neitz,Maureen
中科院分区：
文献类型：
--
作者：
Shevell,StevenK;Sun,Yang;Neitz,Maureen
瑞利匹配是现代仪器中 545+670nm 光和 589nm 光混合的颜色匹配，是诊断遗传性红绿色缺陷的权威测量方法。所有三色视者，无论正常还是异常，都具有有限的 545+670nm 混合范围，它们认为与 589nm 匹配：典型的颜色正常匹配范围约为混合物中 670nm 的 50-55%（氘代模式），而次三色者的范围包括比正常值少 670nm 的混合物，原色者的范围包括比正常值多 670nm 的混合物。此外，对于正常细胞来说，589nm 光的匹配亮度与正常细胞相同，但对于原细胞来说，匹配亮度低于正常细胞。因此，意外瑞利匹配的一个例子是高于正常的匹配范围（典型的红色常亮）和 589nm 的正常亮度设置（典型的绿色常亮），这种匹配“当光谱的红端未变暗时”被称为“红色常亮”[Pickford, R.W. (1950)。色盲的三个谱系。自然，165, 182.]。在这种情况下，瑞利匹配不能得出明确的诊断。除了皮克福德之外，我们只知道类似观察者的另一份报告 [Pokorny, J., & Smith, V. C. (1981)。红绿色缺陷的一种变体。视觉研究，21, 311–317]；这项研究早于现代基因技术，可以揭示红绿范围内的锥体感光色素。我们最近有机会对这样的观察者进行基因和心理物理测试。基因结果预测他是一名绿色盲。他的瑞利匹配与 L 锥体和杆的贡献一致。此外，在杆抑制背景下，他的瑞利匹配具有单一 L 锥体感光色素（绿色盲）的特征。
The Rayleigh match, a color match between a mixture of 545+670nm lights and 589nm light in modern instruments, is the definitive measurement for the diagnosis of inherited red–green color defects. All trichromats, whether normal or anomalous, have a limited range of 545+670nm mixtures they perceive to match 589nm: a typical color-normal match range is about 50–55% of 670nm in the mixture (deutan mode), while deuteranomals have a range that includes mixtures with less 670nm than normal and protanomals a range that includes mixtures with more 670nm than normal. Further, the matching luminance of the 589nm light for deuteranomals is the same as for normals but for protanomals is below normal. An example of an unexpected Rayleigh match, therefore, is a match range above normal (typical of protanomaly) and a normal luminance setting for 589nm (typical of deuteranomaly), a match called protanomaly “when the red end of the spectrum is not darkened” [Pickford, R.W. (1950). Three pedigrees for color blindness. Nature, 165, 182.]. In this case, Rayleigh matching does not yield a clear diagnosis. Aside from Pickford, we are aware of only one other report of a similar observer [Pokorny, J., & Smith, V. C. (1981). A variant of red–green color defect. Vision Research, 21, 311–317]; this study predated modern genetic techniques that can reveal the cone photopigment(s) in the red–green range. We recently had the opportunity to conduct genetic and psychophysical tests on such an observer. Genetic results predict he is a deuteranope. His Rayleigh match is consistent with L cones and a contribution from rods. Further, with a rod-suppressing background, his Rayleigh match is characteristic of a single L-cone photopigment (deuteranopia).