stereopsis

Stereopsis is the brain’s ability to perceive depth and three-dimensional structure by integrating images from both eyes. Each eye views the scene from a slightly different angle, creating two images. The brain compares these images, and the small differences—called binocular disparities—allow us to judge how far objects are and perceive a sense of depth. This process is essential for activities like judging distances, navigating surroundings, and performing precise tasks. Stereopsis is part of our vision system that combines the slightly different perspectives from each eye into a unified, three-dimensional perception of the world.