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Ocular motor function in motor neuron disease.

M Gizzi1, A DiRocco, M Sivak

  • 1Department of Neurology, Mount Sinai School of Medicine, New York, NY.

Neurology
|May 1, 1992
PubMed
Summary
This summary is machine-generated.

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Ocular motor function is typically normal in motor neuron disease (MND). However, parkinsonian features in MND patients can lead to impaired eye movements, suggesting secondary conditions affect ocular motor control.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Neurology

Background:

  • Motor neuron disease (MND) is a progressive neurodegenerative disorder.
  • Ocular motor function is crucial for daily activities and can be affected in neurological conditions.

Purpose of the Study:

  • To investigate ocular motor function in patients with motor neuron disease (MND).
  • To determine if MND itself affects eye movements or if secondary conditions are responsible.

Main Methods:

  • Evaluated saccades, ocular pursuit, and vestibulo-ocular reflex (VOR) suppression in 34 MND patients and 18 controls.
  • Assessed neurological examinations, noting parkinsonian features in some MND subjects.

Main Results:

  • Non-parkinsonian MND patients exhibited normal ocular motor function.
Keywords:
Non-programmatic

Related Experiment Videos

  • Parkinsonian-MND patients showed impaired saccadic and pursuit eye movements.
  • One parkinsonian-MND patient with poor pursuit could not suppress VOR.

    • Conclusions:

    • Ocular motor function is generally preserved in motor neuron disease.
    • Ocular motor dysfunction in MND likely results from co-occurring conditions like parkinsonism.