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Applied Optics

Applied Optics


  • Vol. 40, Iss. 1 — Jan. 1, 2001
  • pp: 167–175

Interferometry for ocular microtremor measurement

Gerard Boyle, Davis Coakley, and Jim F. Malone  »View Author Affiliations

Applied Optics, Vol. 40, Issue 1, pp. 167-175 (2001)

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The eyes of all normal subjects undergo a continuous, low-amplitude, high-frequency tremor called ocular microtremor (OMT). A number of potential clinical applications of OMT have been identified, including the prediction of outcome in coma. To date, OMT has been investigated primarily with an eye-contacting piezoelectric probe. We describe a laser-based, noncontacting, interferometric technique for the measurement of OMT. The technique employs an in-plane-sensitive, phase-modulating speckle interferometer to detect the movement of the sclera, or white of the eye.

© 2001 Optical Society of America

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine

Original Manuscript: November 23, 1999
Revised Manuscript: September 5, 2000
Published: January 1, 2001

Gerard Boyle, Davis Coakley, and Jim F. Malone, "Interferometry for ocular microtremor measurement," Appl. Opt. 40, 167-175 (2001)

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