optic nerve
US /ˈɑːptɪk nɜːrv/
UK /ˈɑːptɪk nɜːrv/
1.
each of the second pair of cranial nerves, transmitting impulses from the retina to the brain.
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Damage to the optic nerve can lead to vision loss.
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The ophthalmologist examined her optic nerve for signs of glaucoma.