中心视力是临床上评价视觉系统形觉功能最常用的指标。但是,由于中心视力实际上只反映视网膜黄斑中心凹区对细小目标的分辨能力,因而不能够全面地描述视觉系统的形觉功能特点。自从Schade 把空间光栅用于分析视觉系统的信息传递特征以后,Campbell 等首先测量了人视觉系统感受各种空间频率正弦光栅的阈值对比度,并将其倒数作为空间频率的函数,称为对比敏感度函数(Contrast sensitivity function,CSF)。由于CSF 不仅能够反映视系统对细 Center vision is clinically the most commonly used indicator of the visual system’s visual function. However, the central visual acuity can not fully describe the visual function of the visual system because it only reflects the resolving ability of the foveal center of the macula to small targets. Since Schade used space gratings to analyze the information transfer characteristics of vision systems, Campbell et al. First measured the threshold contrast of sinusoidal gratings of various spatial frequencies perceived by the human visual system, and expressed the inverse sensitivity as a function of spatial frequency Function (Contrast sensitivity function, CSF). Because CSF can not only reflect the visual system to fine