There are six extra ocular muscles responsible for the movement of the globe, four recti and two obliques. The motor supply of the recti is the occulomotor nerve (cranial III), except for the lateral rectus which is supplied by the abducent nerve (cranial VI). The occulomotor also supplies the inferior oblique muscle. The superior oblique is supplied by the trochlear nerve (cranial IV). Tenon’s capsule is a thin fascial membrane that envelops the globe and separates it from the orbital fat.