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High accuracy measurement of spectral characteristics of movements of the eye elements

Kasprzak, Henryk, Iskander, D. Robert, Bajraszewski, Tomasz, Kowalczyk, Andrzej , & Nowak-Szczepanowska, W. (2007) High accuracy measurement of spectral characteristics of movements of the eye elements. Optica Pura Y Aplicada, 40(1), pp. 7-11.

Abstract

Kinematics of displacements of the eye’s elements was investigated by means of fast pupillometry and spectral optical coherence tomography. Time-frequency analysis of the fluctuations of the pupil diameter (hippus) as well as longitudinal movements of the cornea, the lens and retina was used to evaluate the temporal and spectral characteristics of the recorded measurements. A high correlation between the kinematics of eye’s elements and the cardiopulmonary activity was found. The average amplitude of hippus was in the range from 0.1 to 0.3 mm while its observed frequencies reached up to the seventh harmonic of the pulse. The longitudinal pulsations of the cornea, the lens and retina along the visual axis showed similar effective amplitudes from around 25 to 35 μm with frequencies that could reach up to the eighth harmonic of the pulse. The study showed a clear link between the cardio-pulmonary system and movements of the eye’s elements. This link needs to be further investigated as it may play a significant role in the eye’s visual process.

Impact and interest:

7 citations in Scopus
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ID Code: 12573
Item Type: Journal Article
Additional Information: For more information, please refer to the journal’s website (see hypertext link) or contact the author.
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ISSN: 0030-3917
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Vision Science (111303)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Optical Technology (111302)
Divisions: Current > Research Centres > Centre for Health Research
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2007 Instituto de Optica "Daza de Valdes"
Deposited On: 21 Feb 2008
Last Modified: 11 Aug 2011 01:17

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