The superior ophthalmic vein is one of the two veins that drain the orbit and structures within it.
The superior ophthalmic vein begins as a continuation of the nasofrontal vein within the orbital cavity. The nasofrontal vein communicates anteriorly with the facial vein via the angular vein.
Inside the orbit, the superior ophthalmic vein takes on a course similar to that of ophthalmic artery and receives tributaries corresponding to the branches of this artery.
The vein exits the orbit passing between the two heads of the Lateral rectus muscle and then through the superior orbital fissure. It ends in the cavernous sinus.
The superior ophthalmic vein receives tributaries corresponding to the branches of the ophthalmic artery.