Relationship between refractive error and monochromatic aberrations of the eye
Relationship between refractive error and monochromatic aberrations of the eye
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DOI：
10.1097/00006324-200301000-00007
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发表时间：
2003-01-01
影响因子：
1.4
通讯作者：
Thibos, LN
中科院分区：
文献类型：
--
作者：
Cheng, X;Bradley, A;Thibos, LN
目的。研究200只屈光不正在+5.00 ~ -10.00 d范围内的正常人眼屈光不正与光学像差之间的关系。使用屈光不正的缩小眼模型，我们检验了眼睛的光学系统与屈光不正程度不相关的假设。这些预测是用沙克-哈特曼像差仪进行实验评估的，该像差仪测量了在经过良好矫正的单眼瘫痪的眼睛中，放大瞳孔中央6mm处的单色像差。结果。光学理论预测，并在模型眼上的控制实验证实，即使眼睛的屈光成分是固定的，沙克-哈特曼测量的球像差也会随着眼睛的轴向伸长而变化。与这些预测相反，球像差与非屈光性眼睛没有显著差异。三阶像差、四阶像差和总高像差（近视和远视的3 ~ 1 ON）的均方根也与屈光不正无关。散光眼往往有较大的总高阶像差比非散光眼。结论。我们的结论是，假设固定光学参数和变轴长的近视模型是站不住脚的。
Purpose. To examine the relationship between ametropia and optical aberrations in a population of 200 normal human eyes with refractive errors spanning the range from +5.00 to -10.00 D. Methods. Using a reduced-eye model of ametropia, we tested the hypothesis that the optical system of the eye is uncorrelated with the degree of ametropia. These predictions were evaluated experimentally with a Shack-Hartmann aberrometer that measured the monochromatic aberrations across the central 6 mm of the dilated pupil in well-corrected, cyclopleged eyes. Results. Optical theory predicted, and control experiments on a model eye verified, that Shack-Hartmann measurements of spherical aberration will vary with axial elongation of the eye even if the dioptric components of the eye are fixed. Contrary to these predictions, spherical aberration was not significantly different from emmetropic eyes. Root mean square of third-order aberrations, fourth-order aberrations, and total higher aberrations (third to I ON in myopic and hyperopic eyes were also uncorrelated with refractive error. Astigmatic eyes tended to have larger total higher-order aberrations than nonastigmatic eyes. Conclusions. We conclude that a reduced-eye model of myopia assuming fixed optical parameters and variable axial length is not tenable.