About Scylab medic
Objects of interest are focused upon. All other objects are blurred but there is a large field of vision beyond the field of focus. Multiple images and movements of the eye produce a three dimensional image in the brain, which aims to allow orientation in space. Vision of the Blind Blind people perceive their surroundings with their hands and ears. They explore their immediate environment with white canes, which allow them a point by point perception of space.