Binocular summation in vernier acuity
- 1 April 1991
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America A
- Vol. 8 (4) , 673-680
- https://doi.org/10.1364/josaa.8.000673
Abstract
Monocular and binocular abutting line vernier acuities were measured as a function of contrast. Over a range of contrasts from near the line-detection threshold to approximately 20 times threshold, binocular vernier thresholds are lower (better) than monocular thresholds by approximately 50–60%, similar to the binocular improvement found for the detection of both a thin line and a dipole. At higher contrasts the binocular advantage diminishes, apparently as a result of saturation.Keywords
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