摘要
目的 :探讨视觉分辨力的理论计算值与实际检测结果存在很大差距的原因及修正的方法。方法:剖析计算视觉分辨力的理论基础,应用有关视觉分辨力的基本知识,阐明计算公式中相关参数的含义。比较修正前后两种计算结果。结果:眼最小分辨角用感受器理论计算应为25″,用小数法记应为2.4;按光波动理论计算应为26.26″～35.02″,用小数法记视力应为1.7～2.3。
Objective:To study the reason and modify methods of the difference between the theory of calculation and the actual measurement to the resolution of vision.Methods:Aanlyze the theory basis to the resolution of vision with the basic knowledge,and clarify the related parameter of the formula.Results:The smallest resolution angle of the eye is25″with the reˉceptor theory,the corresponding decimal vision acuity is2.4;the smallest resolution angle of the eye is26.26″～35.02″with the wave theory,the corresponding decimal vision acuity is1.7～2.3.Conclusion:The theory of calculation should be in accordance with the actual measurement.
出处
《天津医科大学学报》
2004年第1期103-105,共3页
Journal of Tianjin Medical University
关键词
视力
最小分辨角
锥体细胞
Rayleigh判据
Visual acuity
The Smallest Resolution Angle of The Eye
Cone Cell
Rayleigh′s Criterion
