Bedell H E, Enoch J M
J Opt Soc Am. 1979 Mar;69(3):435-42. doi: 10.1364/josa.69.000435.
Directional sensitivity of the retina (the Stiles-Crawford function of the first kind) was measured at a point 35 degrees from fixation and at the point of fixation. Three normal observers were used. The peripheral test point intercepted the retina between the optic nerve head and the ora serrata. At both test points, photopic and scotopic (one subject) Stiles-Crawford function peaks were contained within the pupillary bound and approximated the center of the pupil. Directionality at the two points was rather similar. These findings add strength to the argument that retinal receptors align approximately with the center of the exit pupil of the eye. Evidence for stability in Stiles-Crawford peak location in time is also presented.
在离注视点35度处以及注视点处测量了视网膜的方向敏感性（第一种斯泰尔斯-克劳福德函数）。使用了三名正常观察者。周边测试点位于视神经乳头和锯齿缘之间的视网膜上。在两个测试点，明视觉和暗视觉（一名受试者）的斯泰尔斯-克劳福德函数峰值都包含在瞳孔边界内，并且接近瞳孔中心。这两个点的方向性相当相似。这些发现进一步支持了视网膜感受器大致与眼睛出射瞳孔中心对齐的观点。还给出了斯泰尔斯-克劳福德峰值位置在时间上稳定性的证据。
