Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1987-03-18
1989-07-25
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351210, A61B 310
Patent
active
048506915
ABSTRACT:
Method and apparatus are disclosed for determining pupillary response parameters, such as latency, time of acceleration of constriction, and speed of constriction. In a form of the disclosed method a signal is derived which is representative of measured pupil size as a function of time after a visible light stimulus. The signal is modified to remove therefrom artifacts due to eye movement. Pupillary response parameters can be obtained from the modified signal. In a preferred embodiment, the modifying of the signal includes fitting curves to different portions of the signal, correcting at least one of the fitted curves, and deriving the modified signal from the curves, as corrected.
REFERENCES:
patent: Re28415 (1975-05-01), Robinson et al.
patent: 3450466 (1969-06-01), Streisinger
patent: 3473868 (1969-10-01), Young et al.
patent: 3984156 (1976-10-01), Jernigan
patent: 4149787 (1979-04-01), Kobayashi et al.
patent: 4169663 (1979-10-01), Murr
patent: 4387974 (1983-06-01), Marshall et al.
patent: 4397531 (1983-08-01), Lees
Bellarminov, Pflugers Arch. Ges. Phusiol., 37. 7, 1885.
Lowenstein et al., Pupillographic Studies, Arch. of Ophthal., 27, 969-993, 1942.
Lowenstein and Lowenfeld, Electronic Pupillography, AMA Arch. of Ophthal., 59, 352-363, 1958.
Ishikawa et al., A New Vedeopupillography, Opthalmalogica, 160, 248-259, 1970.
Matsunaga, A New Binocular Electronic Scanning Pupillometer, Physiologia, 16, 115-120, 1973.
Watanabe, A Solid State Television Pupillometer, Vision Research, 22, 499-505, 1952.
Jones et al. A New Solid State Dynamic Pupillometer Using A Self-Scanning Photodiode Array, Journal of Physics E: Scientific Instruments, 16, 1169, 1983.
Stark, Stability, Oscillations, And Noise In The Human Pupil Servomechanism, Proceedings of the IRE, Nov. 1959.
Zuber et al., A Simple Inexpensive Electronic Pupillometer, Vision Research, 5, 695-696, 1965.
Cassady, Pupillary Activity Measured by Reflected Infra-Red Light, Physiology and Behavior, 28, 851-854, 1982.
Alexandridis et al., The Latent Period of the Pupil Light Reflex in Legions of the Optic Nerve, Ophthalmalogica, Basel, 182, 211-217, 1981.
Lowenfeld et al., Influence of Pupil Size on Dynamics of Pupillary Movements, Amer. Jour. of Ophthal., 71, 347-362, 1971.
C. Ellis, Journal of Neurology, Neurosurgery, and Psychiatry, 42, 1008-1017, 1979.
Kase et al., Pupillary Light Reflex in Amblyopia, Invest. Ophthal. and Vis. Sci, 467-471, 1981.
Braakman et al., Systematic Selection of Prognostic Features In Patients with Severe Head Injury, Neurosurgery, 6, 362-369, 1980.
American Medical News, Mar. 15, 1985, p. 55.
AFP, vol. 31, No. 3, p. 192.
Lowenfeld et al., Iris Mechanics, Influence of Pupil Size on Dynamics of Pupillary Movements, American Journal of Ophthalmology, 1971.
Johnson et al., The Photomyoclonic Reflex: An Artifact in the Clinical Electroretinogram, Brit. Journal of Ophthal., 66, 1982.
Alpern et al., The Dependence of the Photopupil Response on Flash Duration Intensity, Jour. of Gen. Phys., 47, 265-278, 1963.
Davson, The Physiology of the Eye, Little Brown & Co., G. B. 1963.
Ellis, The Pupillary Light Reflex in Normal Subjects, Brit. Jour. of Ophthal., 65, 754-759, 1981.
Sliney et al., Evaluation of Optical Radiation Hazards, Appl. Opt., 12, 1-24, 1973.
Webster, Pupillary Light Reflex: Development of Teaching Models, IEEE Transactions on Bio-Medical Engineering, vol. BME-18 No. 3, May 1971.
Maletinsky, Modelling and Identification of the Pupillary Light Reflex System, IEEE CH1486-0/79/0000-0526, pp. 526-527, 1979.
Newsome et al., Iris Mechanics II. Influence of Pupil Size on Details of Iris Structure, American Journal of Ophthalmology, vol. 71, No. 2, Feb. 1971.
Lowenstein et al., Influence of Retinal Adaptation Upon the Pupillary Reflex to Light in Normal Man, Pupillary Reflex to Light, pp. 644-653.
Safran et al., Pupil Cycle Induction Test: A Way of Evaluating the Pupillary Light Reflex, Pupil Cycle Induction Text, Opthalmologica, Basel 183: 205-213 1981.
Lowenstein, Pupillary Methods and Diagnostic System Opthalmology Illustrated, A.M.A. Archives of Opthalmology, pp. 565-571, Nov. 21, 1955.
Gundersen, A New Photostimulator and Videopupillograph for Quantitative Neuroophthalmological Studies, Opthalmologica, Basel 172: 62-68 1976.
Applied Science Laboratories, "Update 84" Eye View Monitor Literature (4 sheets).
Applied Science Laboratories, Helmet Mounted Eye View Monitor Literature (2 sheets).
Applied Science Laboratories, ASL-210 Literature (1 sheet).
Applied Science Laboratories, Eye Track Literature (32 sheets).
Gardner Chester S.
Kast Richard
Schroeder Kirk S.
Bovernick Rodney B.
Dzierzynski P. M.
Novack Martin M.
University of Illinois
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