Gordon J, Abramov I
J Opt Soc Am. 1977 Feb;67(2):202-7. doi: 10.1364/josa.67.000202.
Hue and saturation of spectral lights were measured (direct scaling) in the fovea and at 45 degrees in the periphery; all lights were of equal photopic retinal illuminance (1200 trolands). At each retinal location both large and small targets were used. As shown by previous studies, small peripheral targets appear desaturated and of uncertain hue, except long wavelengths which appear red. However, if target size is increased, saturation increases and a full range of hues is seen; the hue functions for large peripheral targets are comparable to foveal ones for very small targets. From a modified form of color matching, it was concluded that the color deficiency in the periphery is more tritanlike than deutanlike; this is strengthened by the observation, that, for small peripheral targets, hues are generally apportioned between two hue categories and the change from one to the other is at about 580 nm.
在中央凹以及周边45度位置测量了光谱光的色调和饱和度（直接标度法）；所有光的明视觉视网膜照度均相等（1200特罗兰）。在每个视网膜位置都使用了大、小两种目标。如先前研究所示，除了长波长光呈现红色外，周边小目标看起来饱和度降低且色调不确定。然而，如果增大目标尺寸，饱和度会增加，并且能看到完整的色调范围；大周边目标的色调函数与极小中央凹目标的色调函数相当。从一种改进的颜色匹配形式得出结论，周边的色觉缺陷更像蓝色弱而非绿色弱；对于周边小目标，色调通常在两个色调类别之间分配，且从一个类别到另一个类别的变化约在580纳米处，这一观察结果进一步强化了该结论。
