The supraorbital nerve branches from the frontal nerve midway between the base and apex of the orbit. It travels anteriorly above the levator palpebrae superioris and exits the orbit through the supraorbital foramen (or notch) in the superior margin orbit. It exits the orbit lateral to the supratrochlear nerve. It then ascends onto the forehead beneath the corrugator supercilii and frontalis muscles and divides into a medial branch and lateral branch.
The supraorbital nerve provides sensory innervation to the skin of the lateral forehead and upper eyelid, as well as the conjunctiva of the upper eyelid and mucosa of the frontal sinus.
Superior view of a dissection of the left orbit. The frontal nerve can be seen dividing into the supratrochlear nerve, medially and the supraorbital nerve, laterally.
Anterior view of the orbit. The supraorbital nerve can be seen exiting the orbit through the supraorbital notch with the supraorbital artery.