Measurement Of Ocular Counterrolling (OCR) By Polarized Light

Robert V. Kenyon; Byron K. Lichtenberg

doi:10.1117/12.965910

17 May 1982 Measurement Of Ocular Counterrolling (OCR) By Polarized Light

Robert V. Kenyon, Byron K. Lichtenberg

Proceedings Volume 0307, Polarizers and Applications; (1982) https://doi.org/10.1117/12.965910
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

Abstract

Ocular counterrolling (OCR) and torsion refer to twisting eye movements that rotate the eyes about the line of sight. OCR is useful in assessing the activation of the gravito-inertial sensors (otoliths) of the inner ear (vestibular system). Information on otolith function is used in medical and experimental work on human orientation. As valuable as this information is, continuous measurement of OCR is still not readily available. This paper describes a method of continuously measuring OCR using polarized light, a system of polarizers and a contact lens. A polarized hard contact lens is placed between two soft lenses and caused to adhere to the eye by soaking in deionized water. The phase difference between the incident rotating polarized light and the reflected light from this lens gives a measure of eye torsion with little contamination from other eye movement modes. Application and performance of this instrument will be discussed.

Citation Download Citation

Robert V. Kenyon and Byron K. Lichtenberg "Measurement Of Ocular Counterrolling (OCR) By Polarized Light", Proc. SPIE 0307, Polarizers and Applications, (17 May 1982); https://doi.org/10.1117/12.965910

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