title: Absolute stereoscopic thresholds as measured by crossed and uncrossed disparities.
abstract: Stereoscopic tests of 30 subjects by means of diastereo instruments showed a lower threshold for crossed disparities than for uncrossed disparities. These findings support Richards' conclusion that crossed and uncrossed disparity limits are the result of two different mechanisms.
mesh_terms: D003867:Depth Perception; D006801:Humans; D012684:Sensory Thresholds; D014787:Vision Tests / Q000379:methods*