基于心理物理学的弱视辅助检查方法

Amblyopia Assistant Examination Method Based on Psychophysics

弱视是一种由于视觉系统发育障碍所引起,且不能通过光学途径以及手术加以矫正的视功能缺损,我国弱视检出率高达2.8%。弱视是一种发育性疾病,早期发现尽早治疗效果较好,因此,针对弱视的发病机制,借助心理物理学方法,设计一种检查方法帮助医生早期诊断病情,从而制定有效的个性化治疗方案具有重要的意义。运用Matlab7.0与Psychophysics Toolbox2.5设计并实现了以Gabor为刺激源,用于检查弱视患者对比敏感度和拥挤效应的新方法。经临床试用,这种检查方法操作简单、方便,对于进一步检查和诊断弱视患者的视功能缺损具有重要的意义。

Amblyopia is a developmental visual disorder characterized by reduced vision in the absence of any detectable structural or pathological abnormalities that can not improve with refractive correction,there are about 2.8% of people in China have amblyopic disease.Amblyopia is a developmental disease,it will be better to detect and treat as soon as possible,therefore,according to the mechanism of amblyopia,use psychophysical methods,design an examination method to help doctors to diagnose the disease earlier,and make better treatment subjects for the patients will have important meaning.In this paper,Matlab7.0 and Psychophysics Toolbox2.5 are adopted to design and implement a new method based on Gabor stimulus which used for detecting contrast sensitivity and crowding effect in amblyopia.The clinical trails show that the examination method is simple and convenient,it has important meaning to detect and examin different vision functions of amblyopia.