The optic nerve is a collection of nerve fibres that carries visual information from the retina to the brain. It is part of the visual system and can be thought of as an extension of the retina. The fibres in the optic nerve are axons of the ganglion cells in the retina. These axons are bundled together to form the optic nerve, and the axons of the retinal ganglion cells converge to form the optic disc. The optic disc is located at the back of the eye, and it is the point where the optic nerve leaves the eyeball. The optic nerve then travels through the optic canal, a bony opening in the skull, before reaching the brain. The optic nerve is responsible for conveying visual information from the eye to the brain, and it is essential for sight.
optik, narve