Accommodation with higher-order monochromatic aberrations corrected with adaptive optics
Accommodation with higher-order monochromatic aberrations corrected with adaptive optics
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DOI：
10.1364/josaa.23.000001
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发表时间：
2006-01-01
影响因子：
1.9
通讯作者：
Williams, DR
中科院分区：
文献类型：
--
作者：
Chen, L;Kruger, PB;Williams, DR
人眼中的高阶单色像差导致在离最佳焦点较近和较远的距离处的刺激的外观的差异，其可以用作用于调节的带符号的误差信号。我们探讨了高阶单色像差是否会影响实验中这些像差要么存在，因为他们通常是或删除自适应光学的聚散度的0.5 D阶跃变化的反射响应。在六名受试者中，有一名受试者在任何一种情况下都无法适应台阶。有一名受试者显然需要高阶像差才能适应。其余4名受试者即使在去除高阶像差后仍能向正确方向调节。当高阶像差被矫正时，没有受试者改善他们的调节，这表明眼睛景深的相应减小并没有改善矫正反应。这些结果与先前的研究结果一致，即在贫困条件下适应能力存在很大的个体差异。这些结果表明，至少有一些受试者可以使用单色高阶像差来引导调节。他们还表明，当高阶单色像差以及已建立的调节线索大大减少时，一些受试者可以正确调节。(c)2006年美国光学学会。
Higher-order monochromatic aberrations in the human eye cause a difference in the appearance of stimuli at distances nearer and farther from best focus that could serve as a signed error signal for accommodation. We explored whether higher-order monochromatic aberrations affect the accommodative response to 0.5 D step changes in vergence in experiments in which these aberrations were either present as they normally are or removed with adaptive optics. Of six subjects, one could not accommodate at all for steps in either condition. One subject clearly required higher-order aberrations to accommodate at all. The remaining four subjects could accommodate in the correct direction even when higher-order aberrations were removed. No subjects improved their accommodation when higher-order aberrations were corrected, indicating that the corresponding decrease in the depth of field of the eye did not improve the accommodative response. These results are consistent with previous findings of large individual differences in the ability to accommodate in impoverished conditions. These results suggest that at least some subjects can use monochromatic higher-order aberrations to guide accommodation. They also show that some subjects can accommodate correctly when higher-order monochromatic aberrations as well as established cues to accommodation are greatly reduced. (c) 2006 Optical Society of America.