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J Clin Neuroophthalmol · Mar 1989
Case ReportsMesencephalic hemorrhage and unilateral pupillary deficit.
- A Shuaib, G Israelian, and M A Lee.
- Foothills Hospital, Calgary, Alberta, Canada.
- J Clin Neuroophthalmol. 1989 Mar 1; 9 (1): 47-9.
AbstractAn isolated dilated and fixed pupil in the absence of other neurological dysfunction usually suggests ciliary ganglion dysfunction or direct pharmacological blockade of the parasympathetic fibers to the pupil. A unilateral dilated pupil as a manifestation of a mesencephalic hemorrhage has not, to our knowledge, previously been reported. We now describe a 35-year-old woman who had a headache and a dilated and nonreactive right pupil. A cranial computed tomography scan showed a small hemorrhage in the midbrain, and a cerebral angiogram was normal. Mesencephalic hemorrhage should be considered in the differential diagnosis of an isolated dilated pupil.
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