The oculomotor nerve is the third cranial nerve (CN III). It allows movement of the eye muscles, constriction of the pupil, focusing the eyes and the position of the upper eyelid. Cranial nerve III works with other cranial nerves to control eye movements and support sensory functioning.

What 3 cranial nerves directly control the eye muscles?

The extraocular muscles are innervated by lower motor neurons that form three cranial nerves: the abducens, the trochlear, and the oculomotor (Figure 20.3).

What cranial nerve is responsible for lateral eye movement?

Cranial nerve VI abducts the eye through stimulation of the lateral rectus muscle. Failure of abduction indicates paralysis.