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A 36-year-old member asked:

What controls eye movements and the size of the pupils?

1 doctor answer1 doctor weighed in
Dr. Daniel Schainholz
Ophthalmology 35 years experience
Cranial Nerves: Cranial N II (Optic) subtends vision, III (oculomotor) subtends levator, superior rectus (sup. branch), medial rectus, inferior rectus, inf. oblique & pupillary constriction (inf. branch); IV (trochlear) subtends superior oblique; VI (abducens) subtends lateral rectus; and sympathetics along the arterial pathway subtend pupillary dilation. CN's on the left and right. Nuclei in the brainstem.
Last updated Jun 26, 2017
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