An Investigation of the Difference in Stereoacuity between Crossed and Uncrossed Disparities Using Frisby and TNO Tests
Citations Over Time
Abstract
Is stereoacuity better, on average, with a crossed test disparity? To answer this question, 15 subjects with good stereoacuity performed Frisby and TNO stereotests with test plates in each of 2 possible orientations, crossed and uncrossed. Stereoacuities and response times were measured. The answer was that a subject's stereoacuity with crossed and uncrossed disparity could be different, e.g., 30 and 480 sec arc, respectively, but that, on average, a crossed disparity was no easier to detect than an uncrossed one. There were more and greater differences with the TNO than with the Frisby test and Frisby stereoacuity was, on the average, 4 times better. It is recommended that tests which can have two orientations be tested in both and the best result taken as the stereoacuity.
Related Papers
- → Monocular and Binocular Depth Discrimination Thresholds(1999)16 cited
- → A Comparison of Self-Reported and Measured Autostereogram Skills with Clinical Indicators of Vergence and Accommodative Function(2012)3 cited
- Clinical study of the binocular visual function in strabismus patients between before and after strabismus surgery.(2007)
- → The study of reconstruction of binocular vision in adult after horizontal concomitant strabismus surgery(2011)