the nasociliary branch of the ophthalmic nerve exits the skull through the nasal bones.
the nasociliary branch of the ophthalmic nerve exits the skull through the nasal bones.
where does the nasociliary branch of the ophthalmic nerve exit the skull?
through the nasal bones
the frontal branch passes through the orbit superiorly, then reenters the frontal bone briefly before exiting above the orbit through the superior orbital fissure and the supraorbital notch to provide sensory innervation for the skin of the forehead and scalp. the lacrimal nerve passes through the orbit superiorly to innervate the lacrimal gland. the nasociliary branch gives off several sensory branches to the orbit and then continues out through the anterior ethmoidal foramen, where it enters the nasal cavity and provides innervation for much of the anterior nasal mucosa. it also gives off a branch which exits through the nasal bones to form the external nasal nerve.
ophthalmic nerve
bullet::::- superior and inferior divisions of ophthalmic vein. inferior division also passes through the inferior orbital fissure.









































bullet::::- sympathetic fibers from cavernous plexus









































these include nonvisual sensory messages, such as pain, or motor nerves. they also serve as vascular connections.









































the nerves passing through the fissure can be remembered with the mnemonic, "live frankly to see absolutely no insult" - for lacrimal and frontal divisions of the ophthalmic nerve (v1), trochlear nerve (iv), superior division of the oculomotor nerve (iii), abducens nerve (vi), nasociliary branch of the ophthalmic nerve (v1) and inferior division of the oculomotor nerve (iii).
superior orbital fissure