Zhao Junlei, Xiao Fei, Zhao Haoxin, Dai Yun, Zhang Yudong
The Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China.
The Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China.
Biomed Opt Express. 2017 Mar 9;8(4):2138-2147. doi: 10.1364/BOE.8.002138. eCollection 2017 Apr 1.
Higher-order aberrations (HOAs) and intraocular scatter lead to the degradation of image quality on the retina, and consequently deteriorate subjective visual performance. In this article, we modified an adaptive optics double-pass system to combine objective and subjective visual testing capabilities. Employing the modified DP system, we investigated the effects of HOAs and intraocular scatter on contrast sensitivity. Contrast sensitivity measurements were performed with HOAs either retained or corrected by adaptive optics, and with scatter either remaining at the natural eye-induced level or further enhanced by a set of three different scatter filters. Contrast sensitivity was found to be worse when HOAs were uncorrected or scatter increased. Quantitative analysis indicated that the joint effect of HOAs and scatter on contrast sensitivity was not a simple summation of each contributing factor, suggesting a potential compensatory mechanism between HOAs and intraocular scatter on contrast sensitivity.
高阶像差（HOAs）和眼内散射会导致视网膜上图像质量下降，进而使主观视觉性能恶化。在本文中，我们对自适应光学双程系统进行了改进，以结合客观和主观视觉测试能力。使用改进后的双程系统，我们研究了高阶像差和眼内散射对对比敏感度的影响。在保留高阶像差或通过自适应光学进行校正的情况下，以及在散射保持在自然眼诱导水平或通过一组三种不同的散射滤光片进一步增强的情况下，进行了对比敏感度测量。结果发现，当高阶像差未校正或散射增加时，对比敏感度会变差。定量分析表明，高阶像差和散射对对比敏感度的联合效应不是每个影响因素的简单相加，这表明在对比敏感度方面，高阶像差和眼内散射之间可能存在潜在的补偿机制。
