Sight

Visual perception (Sight) is the ability to interpret the surrounding environment by processing information that is contained in visible Template:Wiki. The resulting perception is also known as eyesight, sight, or vision (adjectival form: visual, optical, or ocular). The various physiological components involved in vision are referred to collectively as the visual system, and are the focus of much research in psychology, cognitive science, Template:Wiki, and Template:Wiki Template:Wiki.

The visual system in humans and animals allows Template:Wiki to assimilate information from their surroundings. The act of seeing starts when the lens of the eye focuses an image of its surroundings onto a light-sensitive membrane in the back of the eye, called the Template:Wiki. The Template:Wiki is actually part of the Template:Wiki that is isolated to serve as a transducer for the conversion of patterns of Template:Wiki into Template:Wiki signals. The lens of the eye focuses Template:Wiki on the photoreceptive Template:Wiki of the Template:Wiki, which detect the photons of Template:Wiki and respond by producing neural Template:Wiki. These signals are processed in a hierarchical fashion by different parts of the Template:Wiki, from the Template:Wiki upstream to central Template:Wiki in the Template:Wiki. Template:W