Vohnsen Brian, Carmichael Alessandra, Sharmin Najnin, Qaysi Salihah, Valente Denise
Advanced Optical Imaging Group, School of Physics, University College Dublin, Dublin, Ireland.
J Vis. 2017 Oct 1;17(12):18. doi: 10.1167/17.12.18.
The integrated Stiles-Crawford function is commonly used as apodization model for vision through the natural eye pupil. However, this method does not account for possible effects related to the retinal thickness, the large length-to-diameter aspect ratio of the photoreceptors, or the use of nonMaxwellian illumination. Here, we introduce a geometrical optics model to calculate the fraction of overlap between light at the retina and the photoreceptor outer segments where absorption triggers vision. The model, which does not account for photoreceptor waveguiding, is discussed for both Maxwellian and nonMaxwellian illumination. The integrated Stiles-Crawford effect is analyzed experimentally with a uniaxial pupil-size flicker methodology and we find that the psychophysical measurements match better to the geometrical optics predictions than direct integration of a Stiles-Crawford function.
整合后的斯泰尔斯-克劳福德函数通常用作通过自然眼瞳孔进行视觉的变迹模型。然而，该方法没有考虑与视网膜厚度、光感受器的大长径比或非麦克斯韦照明的使用相关的可能影响。在此，我们引入一个几何光学模型来计算视网膜处的光与光感受器外段之间的重叠部分，其中吸收触发视觉。该模型不考虑光感受器波导，针对麦克斯韦照明和非麦克斯韦照明进行了讨论。采用单轴瞳孔大小闪烁方法对整合后的斯泰尔斯-克劳福德效应进行了实验分析，我们发现心理物理学测量结果与几何光学预测的匹配度优于斯泰尔斯-克劳福德函数的直接积分。
