AP PSYCHOLOGY

Detailed explanation-1: -When your eyes look at a closer object, they angle inwards. This is called convergence. Greater amount of convergence causes eye muscles to do more work. This is a useful feedback indicator to the brain to give us a clue as to how far away an object is.

Detailed explanation-2: -Accommodation is the tension of the muscle that changes the focal length of the lens of eye. Thus it brings into focus objects at different distances. This depth cue is quite weak, and it is effective only at short viewing distances (less than 2 meters) and with other cues.

Detailed explanation-3: -Binocular depth cues are the images taken in by both eyes to give depth perception, or stereopsis. Binocular cues create a three-dimensional image of the world one views. There are two types of binocular depth cues: convergence and retinal disparity. Convergence uses both eyes to focus on one object.

Detailed explanation-4: -It is stereopsis that tricks people into thinking they perceive depth when viewing Magic Eyes, Autostereograms, 3-D movies, and stereoscopic photos. This is a binocular oculomotor cue for distance/depth perception. Because of stereopsis, the two eyeballs focus on the same object.

Detailed explanation-5: -Binocular cues provide depth information when viewing a scene with both eyes. Animals that have their eyes placed frontally can also use information derived from the different projection of objects onto each retina to judge depth.