[1][2] It exits the orbit alongside the supratrochlear nerve.

It contributes arterial supply to the skin, muscles and pericranium of the forehead.

[3] It branches from the ophthalmic artery near the trochlea of the superior oblique muscle in the orbit.

[1][2] After branching from the ophthalmic artery, it passes anteriorly through the superomedial orbit.

[3] The supratrochlear artery supplies blood to the skin of the medial aspect of the forehead and scalp, as well as the underlying pericranium and frontalis muscle.