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Congenital and Acquired Forms

James A. Sharpe, MD; William F. Hoyt, MD; Michael A. Rosenberg, MD

Arch Neurol. 1975;32(3):191-194.

Abstract
Pendular nystagmus occurring during binocular fixation and pursuit of near objects is true convergence-evoked nystagmus. Two forms of this nystagmus are described, one congenital and the other acquired in the course of multiple sclerosis. The congenital form was conjugate and the acquired form disjunctive. Neuropathological examination provided no morphological explanation for the congenital pattern. These two unique forms of nystagmus are induced by one of the visuomotor subsystems controlling convergence.

Author Affiliations
From the Neuro-Ophthalmology Unit, departments of neurology, neurological surgery, and ophthalmology, University of California, San Francisco.

Footnotes
Accepted for publication July 30, 1974.

Reprint requests to 399 Bathurst St, Toronto, Ontario, Canada (Dr. Sharpe).

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