Bedell H E, Katz L M
Am J Optom Physiol Opt. 1982 Oct;59(10):767-9. doi: 10.1097/00006324-198210000-00001.
Despite the decrease in pupillary area for peripheral targets, retinal illuminance remains fairly constant to about 80 deg visual angle. Constant illuminance is maintained in the retinal periphery because the light that enters the pupil is concentrated into smaller retinal images. The correction of the peripheral target luminances for pupillary area is therefore unnecessary except under certain conditions.
尽管周边目标的瞳孔面积减小，但视网膜照度在约80度视角范围内仍保持相当恒定。视网膜周边的照度保持恒定，是因为进入瞳孔的光线被聚焦成较小的视网膜图像。因此，除了在某些条件下，无需对瞳孔面积的周边目标亮度进行校正。
