Atlas of Ophthalmology

Pupil-involving Third Nerve Palsy

Pupil-involving Third Nerve Palsy
The right pupil is dilated in this 53-year-old man who reported the acute onset of headache and complete closure of his right eye. The pupil was non-reactive. Associated findings in the right eye included complete ptosis, exotropia, hypotropia, and impaired adduction, elevation and depression. An isolated, pupil-involving third nerve palsy should immediately prompt consideration of an intracranial aneurysm, particularly when pain is present. Tumors at the skull base are also in the differential diagnosis.
Pollock, Stephen C. , M.D., ¦1, Mebane NC, USA
H49.0
Neuro-Ophthalmology -> Pupillary Abnormalities -> Neurogenic Disorders -> Pupil-involving Third Nerve Palsy
strabism
5830
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