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Neuro-ophthalmology Service, Hospital Santa Lucia, Buenos Aires, Argentine.
We report a case of vertical ocular motor apraxia in a 4-year-old boy whom we have followed for 2 years. The patient had no upward and downward voluntary movements of the eyes since birth, but horizontal movements were normal. He achieved gaze changes in the vertical plane by combined blinks and head movements. Magnetic resonance imaging demonstrated bilateral lesions at the mesencephalic-diencephalic junction.
Address correspondence and reprint requests to Dr. Roberto Ebner, Viamonte 2359, 1056 Buenos Aires, Argentina.
Supported by a grant from Alcon Laboratorios, S.A.
Received July 26, 1989. Accepted for publication in final form September 15, 1989.
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