Experimental Assessment of Monocular and Binocular Vision.
Abstract
Subjective tests using monocular and binocular vision were carried out to measure detection, acuity and recognition capabilities over a range of ambient luminances from .000047 to 7.1 Cd/sq m. Maximum binocular superiority is evident in the region of contrast threshold, the binocular threshold being as much as 30% lower than either of the monocular thresholds. The ratio of binocular: monocular acuity is much lower for high contrast targets, binocular superiority being about 6% at high luminance. This figure steadily increases with reducing contrast and luminance. The practical significance of the results is that binocular instruments have a maximum advantage over monoculars under low luminance conditions when the observer is attempting to acquire low contrast targets.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1977
- Accession Number
- ADA044225
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