Answer:
The answer is Depth Perception
Explanation:
Vision System is the neurobiological circuitry and processing that helps any living  thing  to see.  We  do  see things in 3 - dimentional not in black and white of 2 - dimentional.  It gives us ability to perceive spatial relationships in 3-dimentional space.  we use many signs in a visual scene to establish our sense of depth.
