OPTIC (II) NERVE Q. 1 A 25-year-old man presents with acute, painless loss of vision in the right eye. The appearance of the optic nerve of the right eye is hyperemic. Of the entities listed, the most likely cause may include: A Vitamin BI2 deficiency B Ethambutol hydrochloride toxicity C Leber hereditary optic neuropathy (LHON) […]
OPTIC (II) NERVE OPTIC NERVE (II) Paired nerve that transmits visual information from the retina to the brain. Derived embryologically from the neuroectoderm. The optic nerve is derived from optic stalks during the seventh week of development. Composed of retinal ganglion cell axons and glial cells. Optic nerve extends from the optic disc to the optic chiasm Continues as the optic tract to the lateral geniculate nucleus, pretectal nuclei, and superior colliculus. STRUCTURE: Optic nerve
