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Journal of Biomedical Optics

Simultaneous drift, microsaccades, and ocular microtremor measurement from a single noncontact far-field optical sensor
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Paper Abstract

We report on the combined far-field measurement of the three involuntary eye movements, drift, microsaccades, and ocular microtremor (OMT), using a noncontact far-field optical method. We review the significance of the smallest and least measured, and thus least understood, of the three, OMT. Using modern digital imaging techniques, we perform detailed analysis, present experimental results, and examine the extracted parameters using a noncontact far-field sensor. For the first time, <italic<in vivo</italic< noncontact measurements of all three fixational in-plane movements of the human eye are reported, which simultaneously provide both the horizontal (left-right) and vertical (up-down) displacement results.

Paper Details

Date Published: 12 February 2015
PDF: 13 pages
J. Biomed. Opt. 20(2) 027004 doi: 10.1117/1.JBO.20.2.027004
Published in: Journal of Biomedical Optics Volume 20, Issue 2
Show Author Affiliations
James P. Ryle, National Univ. of Ireland, Maynooth (Republic of Ireland)
Brian Vohnsen, Univ. College Dublin (Republic of Ireland)
John T. Sheridan, Univ. College Dublin (Republic of Ireland)


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