Figure 46.10 How Do We See in 3-D? (A) Our eyes have largely overlapping visual fields, and both eyes transmit information to both sides of the brain. However, because the axons from the inner sides of the retinas cross at the optic chiasm, information from the visual space to the left of straight ahead goes to the right side of the brain, and information from the visual space to the right of straight ahead goes to the left side of the brain. (B) Between these left and right eye columns of neurons are neurons that receive input from both eyes. These are the binocular cells. (C) Light from objects that are different distances away will fall at different locations on the retinas. These disparities between where the image of the fixation point and the images of other objects fall on the retina means that different binocular cells will receive input from different retinal axons depending on how far away the object is. These disparity sensitive cells enable depth perception and 3-D vision.