Lateral rectus m

One of the 6 extrinsic eye muscles, the lateral rectus originates at the Annulus of Zinn (= annular tendon = common tendinous ring) and attaches to the lateral aspect of the eyeball.  The action of the muscle is to direct the gaze laterally, or abduct the gaze, and the lateral rectus m. is innervated by the abducent n. (CN VI).  

Superior view of the right orbit.