Sakai Hiroyuki, Hirata Yutaka, Usui Shiro
Laboratory for Neuroinformatics, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
Optom Vis Sci. 2007 Jun;84(6):517-21. doi: 10.1097/OPX.0b013e31806dba43.
The relationship between residual aberration (residual astigmatism and higher-order aberration) and light-adapted pupil size was investigated in human subjects to verify that the pupil size is adjusted to provide good image quality on the retina through control of the image sharpness and illuminance.
Monochromatic wave aberration and light-adapted pupil diameters were measured from 20 subjects. The measured wave aberration was reconstructed using a sixth-order Zernike polynomial expansion; the neural sharpness was computed as a metric of the residual aberration. Subsequently, the correlation of the neural sharpness and the light-adapted pupil diameter was examined statistically across the subjects in each luminance level.
The light-adapted pupil diameter showed a significant positive correlation with the neural sharpness, except under dark-adapted conditions. In contrast, the pupil diameter showed no significant correlation with the spherical equivalent, as previously shown.
Our results suggest that the level of aberration present in an eye has an influence on pupil size.
在人类受试者中研究残余像差（残余散光和高阶像差）与明适应瞳孔大小之间的关系，以验证瞳孔大小是否通过控制图像清晰度和照度来调节，从而在视网膜上提供良好的图像质量。
测量了20名受试者的单色波像差和明适应瞳孔直径。使用六阶泽尼克多项式展开重建测量的波像差；计算神经清晰度作为残余像差的指标。随后，在每个亮度水平下，对受试者的神经清晰度和明适应瞳孔直径之间的相关性进行了统计学检验。
除了在暗适应条件下，明适应瞳孔直径与神经清晰度呈显著正相关。相比之下，如先前所示，瞳孔直径与等效球镜度无显著相关性。
我们的结果表明，眼睛中存在的像差水平对瞳孔大小有影响。
