![]() diameter, 300-mm-fl achromatic doublets for the left eye. diameter 150-mm-fl achromatic doublets for the right eye and two back-to-back pairs of 2-in. Finally, the pupil plane is relayed to the eye pupil by a third afocal telescope consisting of two 1-in. The pupil plane of the ACL is relayed via a second 4f telescope consisting of a third Optotune lens and an achromatic doublet to a stationary mirror in the right eye and a horizontally rotatable mirror in the left eye. The entrance pupil is relayed to the achromatizing lens (ACL) via a first 4f afocal telescope comprising an achromatic doublet and a second Optotune lens. The entrance pupil is a physical 4-mm aperture. ![]() Optical vergences to the displays are adjusted by the first focus-adjustable liquid lens (model EL-10-30 Optotune, Dietikon, Switzerland) just prior to the entrance pupil. Stimuli are displayed on two Active Matrix Organic Light-Emitting Diode (AMOLED) displays (Waveshare 5.5-in. The optomechanical design of BVAMS was aided by Zemax (Zemax LLC, Kirkland, WA, USA) and SolidWorks (Dassault Systémes, Waltham, MA, USA) software. Finally, we found that the primary cause of chromostereopsis is the TCA of the eyes. For contrast sensitivity, we found that the best sensitivity to a 10-cycle/degree polychromatic grating was attained when LCA and TCA were corrected. For visual acuity, we found that a measurable benefit was realized only with both LCA and TCA correction unless the TCA was low. We found that TCA was generally greater when LCA was corrected. 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. ![]() LCA exhibited inter subject variability but followed expected trends compared with previous reports. Specifically, we studied the effects of LCA and TCA on visual acuity, contrast sensitivity, and chromostereopsis. We used the system to investigate how LCA and TCA affect visual performance. 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.
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