näonerven

Näonerven is a term that refers to the optic nerve in Swedish. The optic nerve is a crucial bundle of nerve fibers that transmits visual information from the retina of the eye to the brain. It is composed of approximately one million nerve fibers that originate from the ganglion cells in the retina. These fibers exit the back of the eyeball at the optic disc, forming the optic nerve.

The primary function of the näonerven is to carry signals about light, color, and detail that the eye perceives to the visual cortex in the brain, where they are processed into images. Damage to the näonerven can result in vision loss, ranging from partial impairment to complete blindness, depending on the extent and location of the damage. Conditions that can affect the näonerven include glaucoma, optic neuritis, and trauma. Regular eye examinations are important for detecting potential issues with the näonerven.