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March 1975

Convergence-Evoked Nystagmus: Congenital and Acquired Forms

Author Affiliations

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

Arch Neurol. 1975;32(3):191-194. doi:10.1001/archneur.1975.00490450071010

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.

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