what cranial nerve moves the pupils
and their functions. The cranial nerves are the 12 pairs of nerves that leave the brain via their own individual apertures in the skull. 1  I Olfactory (Smell). 2  II Optic (Sight). 3  III Oculomotor (Moves eyelid and eyeball and adjusts the pupil and lens of the eye). 4  IV Trochlear (Moves eyeballs).oves the eyeballs by sending nerve impulses to the superior oblique muscles which are among the group of muscles that rotate the eyeballs in their sockets. (The action of this nerve is coordinated with those of the oculomotor and abducens nerves i.e. cranial nerves III and VI.). 5.