The frontal nerve is the largest branch of the ophthalmic nerve(V1), and may be regarded, both from its size and direction, as the continuation of the nerve.
It enters the orbit through the superior orbital fissure, not running within the tendinous ring, and runs forward between the Levator palpebræ superioris and the periosteum.
Midway between the apex and base of the orbit it divides into two branches, supratrochlear nerve and supraorbital nerve.
Read more about Frontal Nerve: Functions, Additional Images
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