Spherical aberration yielding optimum visual performance: evaluation of intraocular lenses using adaptive optics simulation.
Spherical aberration yielding optimum visual performance: evaluation of intraocular lenses using adaptive optics simulation.
复制标题
球面像差产生最佳视觉性能：使用自适应光学模拟评估人工晶状体。
DOI：
10.1016/j.jcrs.2009.02.033
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发表时间：
2009
影响因子：
2.8
通讯作者：
Doble,Nathan
中科院分区：
文献类型：
--
作者：
Werner,JohnS;Elliott,SarahL;Choi,StaceyS;Doble,Nathan
单位：视觉科学和高级视网膜成像实验室，眼科和视觉科学系，加州大学戴维斯医学中心，萨克拉门托，加利福尼亚州，美国。方法：对比敏感度在8个周期每度使用自适应光学系统，允许像差测量与哈特曼-夏克波前传感器和控制的109致动器连续表面变形镜，是在一个平面共轭观察者的瞳孔。通过直径为6.3 mm的光瞳共轭孔径观察垂直Gabor贴片。对比灵敏度的测量是使用变形镜，设置为产生5个球面像差轮廓中的1个（− 0.2至+ 0.2 μm）。球面像差范围内的对比敏感度拟合多项式function.RESULTS：三名受试者（年龄21至24岁）参加。由可变形反射镜产生的球面像差轮廓导致的测量总平均球面像差在− 0.15 μm和+ 0.25 μm之间。3名受试者的该函数的峰值对比敏感度出现在球面像差+ 0.06 μm处。峰值对比敏感度也达到了积极的球面像差为每个主题的数据单独拟合（平均0.09）。结论：有个体间的变异性的测量，但是，平均视觉性能是最好的一个小的正球面像差的介绍。
PURPOSE:To evaluate the influence of spherical aberration on contrast sensitivity using adaptive optics.SETTING:Vision Science and Advanced Retinal Imaging Laboratory, Department of Ophthalmology & Vision Science, University of California, Davis Medical Center, Sacramento, California, USA.METHODS:Contrast sensitivity at 8 cycles per degree was evaluated using an adaptive optics system that permitted aberrations to be measured with a Hartmann-Shack wavefront sensor and controlled by a 109 actuator continuous-surface deformable mirror that was at a plane conjugate to the observer's pupil. Vertical Gabor patches were viewed through a 6.3 mm diameter pupil conjugate aperture. Contrast sensitivity was measured with the deformable mirror set to produce 1 of 5 spherical aberration profiles (− 0.2 to+ 0.2 μm). Contrast sensitivity over the range of spherical aberration was fitted with a polynomial function.RESULTS:Three subjects (age 21 to 24 years) participated. The measured total mean spherical aberration resulting from the spherical aberration profiles produced by the deformable mirror was between− 0.15 μm and+ 0.25 μm. The peak contrast sensitivity of this function for the 3 subjects combined occurred at+ 0.06 μm of spherical aberration. The peak contrast sensitivity was also achieved with positive spherical aberration for each subject's data fitted individually (mean 0.09).CONCLUSION:There was intersubject variability in the measurements; however, the mean visual performance was best with the introduction of a small positive spherical aberration.