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Sight

From Tibetan Buddhist Encyclopedia
(Redirected from Eyesight)
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Tibetan Buddhist Encyclopedia is now 14 years old

Our Encyclopedia recently received a wonderful opportunity for a major renewal on its 14th birthday . After many years of growing our Encyclopedia had become bit slow and sometimes even decided not to answer when people knocked on the door.

A very big thank you and blessings to Dmytro Rudiy (rudiy.nl) for his great work in upgrading the server, website and all of the infrastructure and helping make TBE fast and reliable again for everyone!

We kindly ask our readers to help us cover the cost of this important upgrade and also help with the ongoing costs of keeping the Encyclopedia alive and freely available.
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Sight

Visual perception (Sight) is the ability to interpret the surrounding environment by processing information that is contained in visible light. 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, neuroscience, and molecular biology.

The visual system in humans and animals allows individuals 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 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 photons of light and respond by producing neural impulses. These signals are processed in a hierarchical fashion by different parts of the brain, from the retina upstream to central ganglia in the brain.

Source

Wikipedia:Sight