Volume 32, Issue 5 pp. 633-642
Original Article
Full Access

Effectiveness of botulinum toxin administered to abolish acquired nystagmus

Dr. R. John Leigh MD

Corresponding Author

Dr. R. John Leigh MD

Department of Neurology, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Cleveland, OH

Department of Neuroscience, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Cleveland, OH

Department of Neurology, University Hospitals, 2074 Abington Rd, Cleveland, OH 44106Search for more papers by this author
Robert L Tomsak MD, PhD

Robert L Tomsak MD, PhD

Department of Neurology, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Cleveland, OH

Department of Ophthalmology, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Cleveland, OH

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Michael P. Grant PhD

Michael P. Grant PhD

Department of Neuroscience, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Cleveland, OH

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Bernd F. Remler MD

Bernd F. Remler MD

Department of Neurology, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Cleveland, OH

Department of Ophthalmology, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Cleveland, OH

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Stacy S. Yaniglos OD

Stacy S. Yaniglos OD

Department of Optometry, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Cleveland, OH

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Lisa Lystad MD

Lisa Lystad MD

Department of Neurology, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Cleveland, OH

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Louis F. Dell'Osso PhD

Louis F. Dell'Osso PhD

Department of Neurology, Case Western Reserve University, University Hospitals, and Department of Veterans Affairs Medical Center, Cleveland, OH

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First published: November 1992
Citations: 51

Abstract

We injected botulinum toxin into the horizontal rectus muscles of the right eyes of 2 patients who had acquired pendular nystagmus with horizontal, vertical, and torsional components. This treatment successfully abolished the horizontal component of the nystagmus in the injected eye in both patients for approximately 2 months. Both patients showed a small but measurable improvement of vision in the injected eye that may have been limited by coexistent disease of the visual pathways. The vertical and torsional components of the nystagmus persisted in both patients. In 1 patient, the horizontal component of nystagmus in the noninjected eye increased; we ascribe this finding to plastic-adaptive changes in response to paresis caused by the botulinum toxin. Such plastic-adaptive changes and direct side effects of the injections—such as diplopia and ptosis—may limit the effectiveness of botulinum toxin in the treatment of acquired nystagmus. Neither patient elected to repeat the botulinum treatment.

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