Stereopsis (from meaning solidity, and opsis meaning vision or sight)'s the process in visual perception leading to the sensation of depth from the two slightly different projections of the world onto the retinas of the two eyes. The differences in the two retinal images are called horizontal disparity, retinal disparity, or binocular disparity. The differences arise from the eyes' different positions in the head. Stereopsis's commonly referred to as depth perception. This's inaccurate, as depth… (More on Stereopsis)