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what is optic nerve?
Optic nerve is also known as cranial nerve 2, which transmits visual information from the retina to the brain.


The optic nerve is the second of twelve paired cranial nerves but is considered to be part of the central nervous system.

 >>> Inferior view of the human brain, with the cranial                                                                nerves labelled.


Damage to the optic nerve typically causes permanent and potentially severe loss of vision.


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