A New Clinical Technique for Demonstrating Changes in Eye Acceleration

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Title Journal of Neuro-Ophthalmology, March 1998, Volume 18, Issue 1
Date 1998-03
Language eng
Format application/pdf
Type Text
Publication Type Journal Article
Collection Neuro-ophthalmology Virtual Education Library: NOVEL http://NOVEL.utah.edu
Publisher Lippincott, Williams & Wilkins
Holding Institution Spencer S. Eccles Health Sciences Library, University of Utah, 10 N 1900 E SLC, UT 84112-5890
Rights Management © North American Neuro-Ophthalmology Society
ARK ark:/87278/s61p1668
Setname ehsl_novel_jno
ID 224883
Reference URL https://collections.lib.utah.edu/ark:/87278/s61p1668

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Title A New Clinical Technique for Demonstrating Changes in Eye Acceleration
Creator Brown, P
Affiliation MRC Human Movement and Balance Unit, Institute of Neurology, London, England.
Abstract The eyelid-mounted accelerometer can pick up the acceleration waveform of the eye during horizontal eye movements. The acceleration profile comprises high-amplitude pulsatile activity in the saccade and changes in the level of background ocular microtremor related to eye position. Adducting saccades of 20 degrees were recorded in eight patients with partial internuclear ophthalmoplegias caused by multiple sclerosis and in eight age-matched healthy subjects. The initial pulse of acceleration activity was reduced by 85% in the patients. In the worst-affected cases, adducting saccades were associated only with an increase in the level of background ocular microtremor in the acceleration trace. The results confirm the hypothesis that an internuclear ophthalmoplegia is due to the loss of the pulse signal to ocular motor neurons, with preservation of the step signal in an adducting saccade.
Subject Adult; Older people; Diagnostic Techniques, Ophthalmological; Female; Humans; Male; Middle Older people; Motor Neurons/physiology; Multiple Sclerosis/complications; Oculomotor Muscles/physiopathology; Ophthalmoplegia/etiology; Ophthalmoplegia/physiopathology; Saccades/physiology
OCR Text Show
Format application/pdf
Holding Institution Spencer S. Eccles Health Sciences Library, University of Utah, 10 N 1900 E SLC, UT 84112-5890
Setname ehsl_novel_jno
ID 224873
Reference URL https://collections.lib.utah.edu/ark:/87278/s61p1668/224873