Medical Dictionary


noun vi·sion \ˈvizh-ən\

Medical Definition of VISION

:  the act or power of seeing :  sight
:  the special sense by which the qualities of an object (as color, luminosity, shape, and size) constituting its appearance are perceived through a process in which light rays entering the eye are transformed by the retina into electrical signals that are transmitted to the brain via the optic nerve
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