optic nerve

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optic nerve The second cranial nerve: a paired sensory nerve that runs from each eye to the brain. It is responsible for conveying visual stimuli received by the rods and cones in the retina to the brain for interpretation. See also optic chiasma.

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op·tic nerve • n. Anat. each of the second pair of cranial nerves, transmitting impulses to the brain from the retina at the back of the eye.

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optic nerve: see vision.