Anatomy

Origin

It originates from the medial part of the common tendinous ring (anulus of Zing), and also from the dural sheath of the optic nerve. It passes horizontally forwards along the medial wall of the orbit, below superior oblique.

Insertion

It inserts into the medial surface of the sclera, approximately 5,5 – 6,5 mm from the limbus and slightly anterior to the other recti muscles, with an arch of approximately 6 mm

Nerve

Oculomotor nerve (III cranial nerve).

Actions

Adducts the eyeball.