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Congenital Oculomotor Nerve Paresis With Isolated Cyclic Pupillary Spasms
Michael S Salman1, Samantha F Klassen, Ian H Clark
1Sections of Pediatric Neurology (MSS) and Pediatric Ophthalmology (IHC), Children's Hospital, Winnipeg, Manitoba, Canada; and Departments of Pediatrics and Child Health (MSS) and Ophthalmology (IHC), College of Medicine (SK), Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.
Abstract:
Cyclic oculomotor nerve paresis is a rare and usually congenital disorder. It is characterized by unilateral third nerve paresis with periodic spasms causing eyelid elevation, miosis, and contraction of 1 or more of the extraocular muscles innervated by the third nerve. We report a 20-month-old girl who presented initially with a congenital partial right third nerve paresis without ptosis. She subsequently developed isolated cyclic spasms of the pupil followed several months later by permanent partial ptosis.
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