Herbert Wertheim School of Optometry and Vision Science, University of California at Berkeley, Berkeley, CA, USA.
Johnson & Johnson Vision Care, Research & Development, Jacksonville, FL, USA.
J Vis. 2023 Feb 1;23(2):3. doi: 10.1167/jov.23.2.3.
We describe a system-the Binocular Varichrome and Accommodation Measurement System-that can be used to measure and correct the eye's longitudinal and transverse chromatic aberration (LCA and TCA) and to perform vision tests with custom corrections. We used the system to investigate how LCA and TCA affect visual performance. Specifically, we studied the effects of LCA and TCA on visual acuity, contrast sensitivity, and chromostereopsis. LCA exhibited inter subject variability but followed expected trends compared with previous reports. TCA at the fovea was variable between individuals but with a tendency for the shift at shorter wavelengths to be more temporalward in the visual field in each eye. We found that TCA was generally greater when LCA was corrected. For visual acuity, we found that a measurable benefit was realized only with both LCA and TCA correction unless the TCA was low. For contrast sensitivity, we found that the best sensitivity to a 10-cycle/degree polychromatic grating was attained when LCA and TCA were corrected. Finally, we found that the primary cause of chromostereopsis is the TCA of the eyes.
我们描述了一种系统—— binocular varichrome and accommodation measurement system，它可以用于测量和校正眼睛的纵向和横向色差（LCA 和 TCA），并进行带有定制校正的视力测试。我们使用该系统研究了 LCA 和 TCA 如何影响视觉表现。具体来说，我们研究了 LCA 和 TCA 对视力、对比敏感度和色觉立体视的影响。LCA 在个体间存在可变性，但与之前的报告相比，呈现出预期的趋势。黄斑区的 TCA 在个体之间是可变的，但在每只眼睛的视野中，较短波长的偏移更倾向于颞侧。我们发现，当校正 LCA 时，TCA 通常会更大。对于视力，我们发现只有在同时校正 LCA 和 TCA 时，才能实现可测量的获益，除非 TCA 较低。对于对比敏感度，我们发现当校正 LCA 和 TCA 时，对 10 个周期/度的多色光栅的敏感度最佳。最后，我们发现色觉立体视的主要原因是眼睛的 TCA。
