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首页> 外文期刊>Journal of Optometry >Calculations and Measurements of the Visual Benefit of Correcting the Higher-order Aberrations Using Adaptive Optics Technology
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Calculations and Measurements of the Visual Benefit of Correcting the Higher-order Aberrations Using Adaptive Optics Technology

机译：使用自适应光学技术校正高阶像差的视觉效益的计算和测量

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Purpose: Our goal was to examine the accuracy of metrics, calculated using a numerical eye model including the measurement of the monochromatic aberrations of the eye, to predict the contrast sensitivity (CS) and visual acuity (VA) visual benefits (VB) of correcting higher-order aberrations (HO). Methods: We measured, on the right eyes of 25 subjects (10 myopes and 15 emmetropes) aged 21 to 56 years, the 16 c/deg CS and high-contrast VA in two conditions of aberration corrections: (i) when correcting only the defocus and astigmatism terms and (ii) when dynamically correcting all the monochromatic aberration terms up to the 5^t^h order. The measured VB was defined as the ratio of the performances between these two conditions of aberration corrections. Results: We measured a VB of 1.25 and 1.64 respectively in term of VA and CS. We did not find any influence of age on the VB and no statistical significant difference between the myopic and emmetropic group. The contrast sensitivity VB was well correlated (r^2=0.79) with the ratio of the modulation transfer functions calculated at 16 c/deg in both conditions of aberrations corrections (i.e. MTF"1"6"c"/"d"e"g" "H"O/MTF"1"6"c"/"d"e"g" "S"C). The levels of correlation between various metrics and measured visual acuity VB were lower (r^2=0.30 in the better case), however the averaged VB was correctly predicted by the ratio of the intersections between the MTF and a typically neural contrast threshold function. Conclusions: Metrics based on wave aberration measurements are able to predict the impact of monochromatic aberrations on CS.
机译：目的：我们的目标是检查使用数字眼睛模型（包括眼睛单色像差的测量值）计算出的指标的准确性，以预测校正的对比敏感度（CS）和视敏度（VA）的视觉益处（VB）高阶像差（HO）。方法：我们在两种像差校正条件下，对25位年龄在21至56岁的受试者（10名近视眼和15名正视眼）的右眼测量了16 c / deg CS和高对比度VA：（i）仅校正散焦和像散项;（ii）动态校正所有单色像差项直到5 ^ t ^ h阶。所测量的VB被定义为这两个像差校正条件之间的性能之比。结果：根据VA和CS，我们测得的VB分别为1.25和1.64。我们没有发现年龄对VB有任何影响，并且近视眼和正视眼之间没有统计学上的显着差异。在两种像差校正条件下（即MTF“ 1” 6“ c” /“ d” e“），对比度灵敏度VB与以16 c / deg计算的调制传递函数的比率之间具有很好的相关性（r ^ 2 = 0.79）。 g“” H“ O / MTF” 1“ 6” c“ /” d“ e” g“” S“ C）。各种指标与测得的视敏度VB之间的相关程度较低（在更好的情况下，r ^ 2 = 0.30），但是平均的VB是由MTF与典型的神经对比阈值函数之间的交点之比正确预测的。结论：基于波像差测量的度量标准能够预测单色像差对CS的影响。

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