Forward light scatter analysis of the eye in a spatially-resolved double-pass optical system.
Forward light scatter analysis of the eye in a spatially-resolved double-pass optical system.
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DOI：
10.1364/oe.19.007417
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发表时间：
2011-04-11
期刊：
影响因子：
3.8
通讯作者：
Liu H
中科院分区：
文献类型：
--
作者：
Nam J;Thibos LN;Bradley A;Himebaugh N;Liu H
本文提出了一种将双通光学系统中人眼的前向光散射与常规波前像差分离的光学分析方法。为了量化由这些微观和宏观像差，分别，在鲨鱼哈特曼像差仪的斑点图像模糊的单独贡献，我们开发了一个度量称为径向方差斑点模糊。我们证明了径向方差的可加性属性，使我们能够区分斑点模糊的宏观像差和微观像差。当该方法被应用到在人眼中的泪膜破裂，我们发现，在第二通的微像差约占87%的双通图像模糊的Shack-Hartmann波前像差仪在我们的实验条件下。
An optical analysis is developed to separate forward light scatter of the human eye from the conventional wavefront aberrations in a double pass optical system. To quantify the separate contributions made by these micro- and macro-aberrations, respectively, to the spot image blur in the Shark-Hartmann aberrometer, we develop a metric called radial variance for spot blur. We prove an additivity property for radial variance that allows us to distinguish between spot blurs from macro-aberrations and micro-aberrations. When the method is applied to tear break-up in the human eye, we find that micro-aberrations in the second pass accounts for about 87% of the double pass image blur in the Shack-Hartmann wavefront aberrometer under our experimental conditions.