Optic nerve
The optic nerve, also known as cranial nerve II or simply as CN II, is one of twelve cranial nerves but is also considered to be part of the central nervous system. It sends information from the retina (the outermost part of the eye) to the brain. The brain forms a picture using the information so that you can see things. The retina sees the image upside-down and the optic nerve sends it to the brain so it turns it back into normal. [1]
Optic Nerve Media
A fundus photograph showing the back of the retina. The white circle is the beginning of the optic nerve.
MRI scan of human eye showing optic nerve.
The ophthalmic artery derived from internal carotid artery and its branches. (optic nerve is yellow)
Superficial dissection of brain-stem. Lateral view.
Dissection of brain-stem. Lateral view.
Scheme showing central connections of the optic nerves and optic tracts.
Nerves of the orbit. Seen from above.
Nerves of the orbit, and the ciliary ganglion. Side view.
The terminal portion of the optic nerve and its entrance into the eyeball, in horizontal section.
Structures of the eye labeled
References
- ↑ M.D, Gregory H. Scimeca. Your Eyes See Upside Down and Reversed - Board Certified Eye Doctors | Burlington Bucks County Millville (in en) (11 November 2019). Retrieved 15 October 2023.