Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1990-09-28
1993-02-16
Arnold, Bruce Y.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351205, 351223, 351224, A61B 310
Patent
active
051875063
ABSTRACT:
Portable, scanning, self-measuring pupillometers. With pupillometers described herein, cost effective and accurate central nervous system impairment can be quickly determined, thereby reducing worker inefficiency and improving safety. The pupillometers comprise eye orbit housings for positioning at least one eye orbit for scanning by the pupillometer, radiating diodes interfaced with the housings for irradiating at least one eye with scanning radiation, sensing elements adapted to receive reflected radiation from the eye irradiated by the radiating diodes, the sensing elements being further adapted to respond to a contrast between radiation reflected from the iris of the eye and radiation reflected from the pupil of the eye, and centering elements interfaced with the sensing elements for presenting an image of the pupil to a subject on the sensing elements so that the subject can center the image of the pupil on the sensing elements.
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W. B. Pickworth et al., "Opiate Induced Pupillary Effects on Humans," Methods and Findings in Experimental, Clinical Pharmacology, 1989, vol. 11, pp. 759-763.
A. Radzius et al., "A Portable Pupillometer System for Measuring Pupillary Size and Light Reflex," Behavior Research Methods, Instruments and Computers, 1989, 21(6) 611-618.
Jones et al., "A New Solid State Pupillometer Using a Self-Scanning Photodiode Array," J. Phys. E: Scientific. Instruments, 16, 12, pp. 1169-1172 (Dec. 1983).
International Application No. PCT/GB90/00648, "Device for Monitoring Body Functions", Glynn et al. (Nov. 1, 1990).
Arnold Bruce Y.
Dang Hung Xuan
Fairville Medical Optics Inc.
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