Final answer:
Depth perception in a normal adult is controlled by both monocular and binocular depth cues. Monocular depth cues are based on information within the two-dimensional visual field, such as overlap and relative size differences. Binocular depth cues compare information from the two retinae, which don't see the visual field exactly the same.
Step-by-step explanation:
Depth perception in a normal adult is controlled by both monocular and binocular depth cues. Monocular depth cues are based on information within the two-dimensional visual field, such as overlap and relative size differences. For example, if one object overlaps another, it is perceived as being in front. Binocular depth cues compare information from the two retinae, which don't see the visual field exactly the same. These cues include retinal disparity, where the difference in the location of an object on each retina provides depth information.