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[[Image:lighterstill.jpg]][[Image:Vision_2.jpg|right|frame]]

[[Image:lighterstill.jpg]][[Image:Vision_2.jpg|right|frame]]

'''Vision''' or 'visual [[perception]]' is the ability to interpret [[information]] from visible [[light]] reaching the eyes. The resulting perception is also known as '''eyesight''', '''sight''' or '''vision'''. 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]], [[neuroscience]] and [[molecular biology]].

'''Vision''' or 'visual [[perception]]' is the ability to interpret [[information]] from visible [[light]] reaching the eyes. The resulting perception is also known as '''eyesight''', '''sight''' or '''vision'''. 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]], [[neuroscience]] and [[molecular biology]].

==Visual system==

==Visual system==

The visual system in humans allows [[individual]]s to assimilate information from the environment. 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 [[retina]]. The retina is actually part of the [[brain]] that is isolated to serve as a transducer for the conversion of patterns of light into neuronal signals. The lens of the eye focuses light on the photoreceptive cells of the retina, which detect the [[photon]]s of light and respond by producing neural impulses. These signals are processed in a [[Hierarchy|hierarchical]] fashion by different parts of the brain, from the retina to the lateral geniculate nucleus, to the primary and secondary visual cortex of the [[brain]].

The visual system in humans allows [[individual]]s to assimilate information from the environment. 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 [[retina]]. The retina is actually part of the [[brain]] that is isolated to serve as a transducer for the conversion of patterns of light into neuronal signals. The lens of the eye focuses light on the photoreceptive cells of the retina, which detect the [[photon]]s of light and respond by producing neural impulses. These signals are processed in a [[Hierarchy|hierarchical]] fashion by different parts of the brain, from the retina to the lateral geniculate nucleus, to the primary and secondary visual cortex of the [[brain]].