Chapter 15 - Supraorbital Nerve Block

Abstract

The supraorbital nerve arises from fibers of the frontal nerve, which is the largest branch of the ophthalmic nerve. The frontal nerve enters the orbit via the superior orbital fissure and passes anteriorly beneath the periosteum of the roof of the orbit. The frontal nerve gives off a larger lateral branch, the supraorbital nerve, and a smaller medial branch, the supratrochlear nerve. Both exit the orbit anteriorly. The supraorbital nerve sends fibers all the way to the vertex of the scalp and provides sensory innervation to the forehead, upper eyelid, and anterior scalp. Supraorbital nerve block is useful in the diagnosis and treatment of painful conditions in areas subserved by the supraorbital nerve, including supraorbital neuralgia and pain secondary to acute herpes zoster. Supraorbital nerve block can be used in a diagnostic, prognostic, and therapeutic manner.