Anatomy

Origin

The lateral rectus originates from the lateral part of the common tendinous ring (anulus of Zinn) and bridges of the superior orbital fissure. Some fibers of the lateral rectus also arise from a spine on the greater wing of the sphenoid bone

Insertion

The insertion site of the lateral rectus is the lateral surface of the sclera, approximately 7-8 mm behind the limbus with an arch of approximately 12 mm

Nerve

Trochlear nerve (IV cranial nerve)

Actions

Abducts the eyeball (lateral shift)