Explain the optic nerve?

Cranial nerve II: The optic nerve transmits visual information from the retina to the brain. It represents the only peripheral manifestation of the central nervous system.

A cable: The cable connecting the information picked up by the retina and the brain's visual cortex, after passing through other visual processing areas. The optic nerve crosses at the chiasm, and can be damaged anywhere along it's path. It's part of the central nervous system, which is more difficult to regenerate.

Visual cable: The optic nerve, the head of which is described in the back of the eye by your ophthalmologist as the disc, is the cable carrying visual information into the brain where it ends up in the occipital lobe and interpreted as vision. It contains over 1.2 million fibers as well as supporting elements.A truly amazing nerve.

Optic nerves: Second pair of cranial nerves, transmitting impulses from the retina at the back of the eyes, to the brain. It carries sensory information relating to vision.