Pupil-sparing oculomotor nerve palsy due to midbrain infarction
L. A. Breen, H. C. Hopf, B. K. Farris and L. Gutmann
Department of Neurology, West Virginia University School of Medicine, Morgantown.
Vasculopathic oculomotor nerve palsies with pupillary sparing are thought
to be due to ischemic damage to the nerve in the subarachnoid space or the
cavernous sinus. We present two cases of patients with isolated
pupil-sparing oculomotor nerve palsies due to midbrain infarcts. Focal
ischemic midbrain lesions should be considered in cases of pupil-sparing
oculomotor nerve palsies.