摘要
定量地研究高级像差对人眼成像质量和视觉的影响对人眼像差矫正具有重要的实验和临床意义。利用Hartmann-Shack波前传感器人眼像差仪测量了正常人眼6mm瞳孔的波前像差,由波前像差计算出人眼光学系统的光学调制传递函数MTF和Strehl比率,并由MTF和视网膜空间像调制度AIM曲线计算出人眼视锐度和对比敏感度函数CSF。根据MTF和Strehl比率分析了高级像差对人眼成像质量的影响,根据视锐度和对比敏感度函数CSF分析了高级波像差对视觉的影响。研究表明Zernik前6级像差对人眼成像质量和视觉的影响是不可忽略的,更高级的像差对人眼成像质量和视觉的影响较小,甚至可以忽略。对Zernik前6级像差进行矫正,可以得到相当好的视觉。
The quantitative analysis of the effect of high-order aberrations in human eye on retinal imaging quality and vision has important clinical value in the correction of aberrations. The wavefront aberrations of human eyes for 6mm pupil were measured with the Hartmann-Shack wave-front sensor, and Modulation Transfer Function （MTF） and Strehl ratio were computed from the wave-front aberrations. Visual Acuity （VA） and Contrast Sensitivity Function （CSF） were obtained from MTF and the retinal Aerial Image Modulation （AIM）. It is shown with MTF, AIM, VA, and CSF analysis that the 2nd, 3rd, 4th, 5th, 6th Zernike aberrations deteriorate retinal imaging quality and vision considerably and that Zernike aberrations higher 6-order can be ignored. When the 2nd, 3rd, 4th, 5th, 6th Zernike aberrations are corrected, high-resolution imaging and perfect vision can be obtained.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2007年第3期5-9,共5页
Opto-Electronic Engineering
基金
国家自然科学基金重点项目(60438030)
教育部南开大学天津大学合作基金项目
天津市科技攻关项目(033183711)
