#4978. Effective selection of the optimal virtual reality (VR) lens interval of VR devices using the test patterns of the different shapes for the left and right eyes

July 2026publication date
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Journal’s subject area:
Cultural Studies;
Political Science and International Relations;
Information Systems;
Management Information Systems;
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Abstract:
Selection of the optimal virtual reality (VR) lens interval LI between two convex lenses of a VR device is important for the comfort of viewers. This study examined how the participants selected LI for two types of test patterns. Twenty-one participants with interpupillary distances (IPDs) of 59–68 mm were selected. When the participants were asked to change the LI to match specific positions of the test pattern in which the shapes for the two eyes were different, the selected values of LI did not depend on the initial lens distances. When they were asked to change LI for their best viewing distances using the test pattern with the same shapes for two eyes, the selected values strongly depended on the initial lens conditions. This dependence can be attributed to the finite range of eye rotation inside which binocular fusion can occur. In the former test pattern, binocular fusion does not occur, and each eye is aligned along its fusion-free eye position with little eye strain. Hence, the former test pattern using the different shapes is preferable for controlling the lens interval.
Keywords:
binocular vision; fusional reserve; interpupillary distance (IPD); virtual reality (VR)

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