The OPTIC NERVE is the continuation of the retinal nerve cells as they go toward the brain. There are approximately 1.1 million nerve fibers in each optic nerve. Although we refer to the optic nerve as a "nerve", it is, in fact, more like to brain tissue.
The optic nerves leave the back of each eye and travel to the optic chiasm. This structure, just below the pituitary gland, is where many of the optic nerve fibers cross to the opposite side of the brain. From there, the nerve impulses pass through the optic tracts and radiations to the occipital cortex. This is a specific area at the back of the brain where all visual images are interpreted.
PLEASE NOTE: The information contained on this system is not intended to supplant individual professional consultation, but is offered as a community education service. Advice on individual problems should be obtained directly from a professional.
Copyright, 1994. Richard E. Gans, M.D.
Last Modified: August 23, 1996