Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

the second cranial nerve, that transports the axons of retinal ganglion cells and continues from the retina on to the optic chiasm. Commonly referred to as cranial nerve II.

OPTIC NERVE: "The optic nerve may be absent all together in cases of optic nerve hypoplasia."

More On This Topic

Link to This Definition

Did you find this definition of OPTIC NERVE helpful? You can share it by copying the code below and adding it to your blog or web page.