Burns S A, Wu S, Delori F, Elsner A E
Schepens Eye Research Institute, Boston, Massachusetts 02114, USA.
J Opt Soc Am A Opt Image Sci Vis. 1995 Oct;12(10):2329-38. doi: 10.1364/josaa.12.002329.
We have developed an imaging reflectometer to measure cone-photoreceptor alignment. One makes measurements by bleaching the cone photopigment and imaging the distribution of light returning from the retina, which is illuminated from a small source imaged in the plane of the eye's pupil. If the source is near the optimal entry pupil position as determined psychophysically, the distribution of light returning from the retina is peaked, and the magnitude of the peak depends on the location of the source in the pupil of the eye. If the source is far from the optimal entry pupil position, then there is no measurable peak. The location of the peak varies across individuals and coincides with the reported location of best visibility of the measuring light and with previous psychophysical and reflectometric measurements of the Stiles-Crawford peak. The source of this directionality must arise either from the photoreceptors or from behind the photoreceptors because the peak is not present if measurements are made when the cone photopigments have high optical density.
我们开发了一种成像反射仪来测量视锥光感受器的排列。通过漂白视锥色素并对从视网膜返回的光的分布进行成像来进行测量，视网膜由成像在眼瞳孔平面的小光源照明。如果光源接近通过心理物理学确定的最佳入瞳位置，则从视网膜返回的光的分布会出现峰值，并且峰值的大小取决于光源在眼睛瞳孔中的位置。如果光源远离最佳入瞳位置，则没有可测量的峰值。峰值的位置因人而异，并且与测量光的最佳可见度报告位置以及之前对斯泰尔斯 - 克劳福德峰值的心理物理学和反射测量结果一致。这种方向性的来源必定要么来自光感受器，要么来自光感受器后方，因为当视锥色素具有高光密度时进行测量时不存在峰值。
