Queston #14146Note

Compression of cranial nerve III (oculomotor nerve) causes ipsilateral dilation and paresis of all extraocular muscles except for the lateral rectus (abducens nerve) and superior oblique (trochlear nerve). Pupillary dilation is typically seen prior to the eye muscle paresis with compressive neuropathy due to the superficial location of the parasympathetic fibers responsible for pupil constriction.