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One and a Half SyndromeOccurrence After Trauma With Computerized Tomographic Correlation
Michael S. Smith, MD;
Harvey W. Buchsbaum, MD;
William S. Masland, MD
Arch Neurol. 1980;37(4):251.
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| Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings. |
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Involvement of the pontine horizontal conjugate gaze center and the ipsilateral medial longitudinal fasciculus produces a distinctive constellation of eye movements in which vertical gaze is unimpaired, the ipsilateral eye is fixed in horizontal gaze, and the contralateral eye is able to abduct only in the horizontal plane. This syndrome has been the subject of several case reports,1-4 having been called the "one and a half syndrome" by Fisher2 and "paralytic pontine exotropia" by Sharpe et al.4
Causes of internuclear ophthalmoplegia with a conjugate gaze paralysis have included infarcts,1-4 gliomas of the brainstem,3,4 vascular malformations,4 and demyelinating disease.3 We report a case of the one and a half syndrome caused by trauma, with computerized tomographic (CT) correlation.
REPORT OF A CASE
An 11-year-old girl was in good health until ten days before admission to the Tucson (Ariz) Medical Center, when she was injured
. . . [Full Text PDF of this Article]
Author Affiliations
From the Department of Neurology, University of Arizona Health Sciences Center, Tucson (Dr Smith), and Neurological Associates of Tucson (Drs Buchsbaum and Masland).
Footnotes
Accepted for publication June 23, 1979.
Read in part before the fifth annual Rocky Mountain Neuro-Ophthalmology Course, Jackson Hole, Wyo, Feb 23, 1979.
Reprint requests to Department of Neurology, University of Arizona Health Sciences Center, 1501 N Campbell Ave, Tucson, AZ 85719 (Dr Smith).
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