Visibility of photoreceptors in the intact living cane toad eye
Visibility of photoreceptors in the intact living cane toad eye
复制标题
完整的活甘蔗蟾蜍眼睛中光感受器的可见度
DOI：
10.1016/0042-6989(85)90179-8
复制
发表时间：
1985
期刊：
影响因子：
1.8
通讯作者：
W. S. Jagger
中科院分区：
文献类型：
--
作者：
W. S. Jagger
光感受器在通常的眼底观察条件下是不可见的;从其他结构反射的光使它们变得模糊。当从一侧用强烈的倾斜照明观察时，在甘蔗蟾蜍的完整活体眼睛中显示出可见的单个光感受器。光感受器像光波导一样将光从巩膜引导到观察者。如果视网膜马赛克是如此精细，过度采样的图像，光学系统将无法解决一个单一的马赛克元素。使用眼睛的光学系统，相邻的光感受器被视为单独的光点，这一事实表明视网膜马赛克对光学图像的过采样没有发生。
Photoreceptors are invisible under the usual conditions of viewing the fundus; light reflected from other structures obscures them. Individual photoreceptors are shown to be visible in the intact living eye of the cane toad when viewed with intense oblique illumination from one side. The photoreceptors act like optical waveguides in channelling light from the sclera to the observer. If the retinal mosaic were so fine as to oversample the image, the optical system would not be able to resolve a single mosaic element. The fact that adjacent photoreceptors are seen as separate spots of light, using the eye's optical system, indicates that oversampling of the optical image by the retinal mosaic is not occurring.