Abstract
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
Full Article | PDF ArticleMore Like This
Daniel X. Hammer, Ashley J. Welch, Gary D. Noojin, Robert J. Thomas, David J. Stolarski, and Benjamin A. Rockwell
J. Opt. Soc. Am. A 16(9) 2092-2102 (1999)
G. F. Schmid, B. L. Petrig, C. E. Riva, K. H. Shin, R. A. Stone, M. J. Mendel, and A. M. Laties
Appl. Opt. 35(19) 3358-3361 (1996)
Thomas Fricke-Begemann and Jan Burke
Appl. Opt. 40(28) 5011-5022 (2001)