Effects of higher-order aberrations on contrast acuity as a function of light level
Effects of higher-order aberrations on contrast acuity as a function of light level
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DOI：
10.1080/09500340701469641
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发表时间：
2008-01-01
影响因子：
1.3
通讯作者：
Barbur, John L.
中科院分区：
文献类型：
--
作者：
Dalimier, Eugenie;Dainty, Chris;Barbur, John L.
高阶眼像差对功能性视觉表现的影响进行了评估，为7名年轻的健康受试者，作为光水平的函数。对比敏度阈值进行了测量，功能性视力测试与不纠正高阶像差，并在一些不同的瞳孔大小在三个主题的调查。一个视觉模拟器结合自适应光学（AO）系统用于此目的。结果表明，当光照水平降低时，神经对比敏感度的下降限制了光学退化对视觉的影响。对于暗视、中间视和明视方案，给出了功能性视觉的预期AO益处。
The effects of higher-order ocular aberrations on functional visual performance were assessed for seven young healthy subjects, as a function of light level. Contrast acuity thresholds were measured for a functional vision test with and without correction of higher-order aberrations and at a number of different pupil sizes in three of the subjects investigated. A visual simulator incorporating an adaptive optics (AO) system was used for this purpose. The results show that when light level is decreased, the drop in neural contrast sensitivity limits the impact that increased optical degradations have on vision. The expected AO benefit for functional vision is given for scotopic, mesopic and photopic regimes.