IV.B.2 Head: CN V

IV.B.2 Head: CN V Page 2 of 5

Ophthalmic V1

The ophthalmic branch (V1) of the trigeminal nerve exits the cranium via the superior orbital fissure.

	What other anatomic structures exit via the superior orbital fissure?
Oculomotor nerve - CNIII, Trochlear nerve CNIV, Abducent nerve CNVI and the superior ophthalmic vein.
	To where does the superior ophthalmic vein drain?
Cavernous sinus.

This nerve caries sensory information from the eyes, conjnctiva and orbital contents including the lacrimal gland.

It also receives information from the nasal cavity, frontal sinus, ethmoid cells, falx cerebri, anterior cranial dura, upper eyelid, dorsum of the nose and anterior part of the scalp.(See drawing above)