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The ability to perceive the three-dimensional structure of the world and to accurately judge the distance of objects from the observer. This complex process uses both binocular and monocular cues.
read more about visual depth perception ...Stereopsis is the primary binocular cue, relying on the slight difference between the image seen by the left and right eye (retinal disparity).
Includes size, interposition (overlap), linear perspective, motion parallax (near objects moving faster than far objects), and texture gradient.
Tested using specialized stereopsis tests (e.g., Random Dot Stereo) that use polarized glasses to present different images to each eye, measuring the smallest disparity (in arc seconds) that can be detected.
Yes, but not stereopsis. A monocular person relies entirely on less precise monocular cues (e.g., linear perspective) to judge depth.
The slight difference in the horizontal position of an object's image on the two retinas, which is the raw information used by the brain to calculate fine stereopsis.
A constant eye turn (strabismus) in childhood can prevent the development of stereopsis, leading to permanently reduced depth perception.