Binocular Stereopsis

Binocular stereopsis is also known as stereo vision and relates to our ability to derive information regarding the distance of two objects, based solely on the position of such objects in the two eyes. It sounds complicated, but it’s really pretty simple.

The stereo sound metaphor is a perfect way of understanding binocular stereopsis since the same basic principle applies to our ears. In fact, the whole human body is mostly symmetrical, made of two nearly-identical halves. But if we literally see two different sets of images at all times, why does seeing feels like such a cohesive experience?