Explain how even though images appear on the retina in two-dimensional space, we are able to perceive objects in three dimensions.
What will be an ideal response?
Depth perception is the ability to perceive objects three-dimensionally. To perceive a world of depth, we use two kinds of information, or cues-binocular and monocular. Binocular cues are depth cues that depend on the combination of the images in the left and right eyes. The images from each eye are slightly different because the eyes are in slightly different positions. The brain uses this disparity to determine depth. Convergence is another binocular cue to depth and distance. When we use our two eyes to look at something, they are focused on the same object. If the object is near us, our eyes converge, or move together, almost crossing. If the object is farther away, we can focus on it without pulling our eyes together. The muscle movements involved in convergence provide information about how far away or how deep something is. Additionally, we use monocular cues (or depth cues) such as familiar size, height in field of view, linear perspective, overlap, shading, and texture gradient.
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Fill in the blank with correct word.
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