Enoch J M, Birch D G, Birch E E, Benedetto M D
Trans Ophthalmol Soc U K (1962). 1979;99(3):407-12.
Uniocular occlusion (dark patching) of adults for a period of days produces marked reduction in the directional sensitivity of the eye (Stiles-Crawford effect). The effect reaches a maximum 3 to 5 days after the onset of patching. Recovery occurs in a comparable period. The second eye is not affected, and a simple light diffuser fails to produce the same effect. Coupled with alteration in directional sensitivity are an overall increase in sensitivity and modest resolution and perceived colour changes. These findings, with other research, suggest that directional sensitivity is at least partially mediated by light and that orientation of photoreceptors is an active process.
对成年人单眼进行数天的遮盖（黑暗眼罩）会使该眼的方向敏感性（斯泰尔斯 - 克劳福德效应）显著降低。这种效应在遮盖开始后的3至5天达到最大值。在相当的时间段内会出现恢复。另一只眼睛不受影响，而且一个简单的光扩散器不会产生相同的效果。与方向敏感性的改变同时出现的是敏感性的整体增加、适度的分辨率以及感知到的颜色变化。这些发现与其他研究表明，方向敏感性至少部分是由光介导的，并且光感受器的定向是一个活跃的过程。
