Individual differences in cone photopigments of normal trichromats measured by dual Rayleigh-type color matches.
Individual differences in cone photopigments of normal trichromats measured by dual Rayleigh-type color matches.
复制标题
通过双瑞利型颜色匹配测量正常三色视锥体感光色素的个体差异。
DOI：
10.1016/0042-6989(94)90095-7
复制
发表时间：
1994
期刊：
影响因子：
1.8
通讯作者：
Shevell,SK
中科院分区：
文献类型：
--
作者：
He,JC;Shevell,SK
Individual differences in color matches of normal trichromats are well documented. Recently, variants of the classical Rayleigh match have been measured to explore the cause(s) of these individual differences. Interobserver differences in the wavelength of peak sensitivity of photopigment (λmax) are of primary interest because they are attributed to an X-chromosome-linked polymorphism. Color-matching equations, however, show the Rayleigh match cannot distinguish between interobserver differences in λmaxand interobserver differences in the optical density of photopigment. Further analysis of color-matching equations reveals that the ratio of two particular Rayleigh-type matches amplifies the effect of individual differences in the λmaxof L cones relative to the effects of optical density and pre-receptoral spectrally selective filtering. The ratio of these two color matches was measured for 17 color-normal males. The range of the results for the 17 observers is too large to be explained by only individual differences in photopigment optical density and pre-receptoral filtering. This implies there are interobserver differences in λmax. The results are accounted for quantitatively by a small difference (3–5 nm) in the λmaxof the L-cone photopigment. The ratio of two Rayleigh-type matches is a rapid and convenient measurement for assessing the L-cone λmaxin the eye of an individual observer and therefore may be useful for classifying normal trichromats into phenotypic sub-types.
