PMID: 1206425Dec 1, 1975Paper

An investigation of the correlation between abnormal patterns of ocular microtremor and an abnormal pupil reflex in neurological patients

Journal of the Neurological Sciences
L Y AbakumovaJ G Thomas

Abstract

Twenty-two patients and 7 normal subjects at the Burdenko Institute of Neurosurgery, Moscow, have taken part in an investigation in which the direct light reflex to a brief flash, and the high-frequency microtremor of the eyes, have been recorded. The direct pupil reflex recordings obtained with a flash of 20 msec duration and 100 lux intensity at the plane of the pupil were registered from the right eye of each patient. Ocular microtremor recordings were obtained simultaneously from both eyes of 20 of the patients. A set of criteria of abnormality of ocular microtremor, as judged by visual examination of the records, is proposed by the authors. Abnormality of the pupil reflex is assessed in terms of the amplitude, latent period, and time course of the contraction and relaxation phases of the reflex. A strong correlation has been found between the occurrence of an abnormal ocular tremor record and an abnormal pupil reflex. On the basis of this correlation, the authors propose that ocular tremor recordings may be used in diagnosis as sensitive indicators of brain-stem dysfunction.

References

Jun 1, 1973·The British Journal of Ophthalmology·S Duke-Elder
Feb 1, 1967·American Journal of Optometry and Archives of American Academy of Optometry·R P Carifa, F W Hebbard
Mar 1, 1967·Kybernetik·J G Thomas
Mar 1, 1968·Medical & Biological Engineering·H Bengi, J G Thomas
Sep 13, 1956·The New England Journal of Medicine·W K JORDAN, H H MERRITT

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Citations

May 1, 1993·Medical & Biological Engineering & Computing·N F SheahanJ Malone
Jan 1, 1977·Electroencephalography and Clinical Neurophysiology·A R Shakhnovich, J G Thomas
Mar 1, 1977·Journal of the Neurological Sciences·D Coakley, J G Thomas
Jan 5, 2008·Neurological Research·James Robertson, Shelly Timmons
May 27, 1999·Vision Research·C BolgerJ F Malone
Apr 6, 2019·European Heart Journal. Acute Cardiovascular Care·Laust OblingJesper Kjaergaard
May 1, 1992·Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Für Medizinische Physik and the European Federation of Organisations for Medical Physics·C BolgerJ Malone
Sep 1, 1978·Journal of Medical Engineering & Technology·W L Davies, G R Plant

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