Convergence-evoked nystagmus.

Oliva, A; Rosenberg, M L · Neurology · 1990

case_series · Level IV

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Abstract

We describe 17 patients with acquired convergence-evoked nystagmus (CEN). Vertical CEN was most common (82%), with upbeat much more frequent than downbeat. The most common diagnoses were multiple sclerosis (41%) and brainstem infarction (29%). CEN is an easily elicited bedside sign of posterior fossa dysfunction and can be a clinically useful manifestation. In cases of isolated optic neuritis, the presence of CEN may indicate dissemination of neurologic disease.

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