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Related Experiment Videos

Convergence-evoked nystagmus.

A Oliva1, M L Rosenberg

  • 1Neurology Service, Walter Reed Army Medical Center, Washington, DC.

Neurology
|January 1, 1990
PubMed
Summary
This summary is machine-generated.

Acquired convergence-evoked nystagmus (CEN) is a common sign of posterior fossa dysfunction, often vertical. This bedside finding can indicate neurological disease, even in isolated optic neuritis cases.

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Area of Science:

  • Neuro-ophthalmology
  • Neurology

Background:

  • Acquired convergence-evoked nystagmus (CEN) is a specific type of involuntary eye movement.
  • Understanding the clinical significance of CEN is crucial for diagnosing neurological disorders.

Purpose of the Study:

  • To describe the characteristics of acquired convergence-evoked nystagmus (CEN).
  • To identify common diagnoses associated with CEN.
  • To evaluate the clinical utility of CEN as a diagnostic sign.

Main Methods:

  • Retrospective case series.
  • Clinical examination of 17 patients with acquired CEN.
  • Review of patient diagnoses and neurological history.

Main Results:

  • Vertical CEN was observed in 82% of patients, with upbeat nystagmus being more frequent than downbeat.

Related Experiment Videos

  • Multiple sclerosis (41%) and brainstem infarction (29%) were the most common associated diagnoses.
  • CEN was an easily elicited bedside sign.

    • Conclusions:

    • CEN is a valuable bedside sign indicative of posterior fossa dysfunction.
    • The presence of CEN, especially in isolated optic neuritis, may suggest broader neurological disease dissemination.
    • CEN can be a clinically useful manifestation in neurological assessments.