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Title: Apparatus and method for non-contact, acoustic resonance determination of intraocular pressure

The apparatus and method for measuring intraocular pressure changes in an eye under investigation by detection of vibrational resonances therein. An ultrasonic transducer operating at its resonant frequency is amplitude modulated and swept over a range of audio frequencies in which human eyes will resonate. The output therefrom is focused onto the eye under investigation, and the resonant vibrations of the eye observed using a fiber-optic reflection vibration sensor. Since the resonant frequency of the eye is dependent on the pressure therein, changes in intraocular pressure may readily be determined after a baseline pressure is established. 3 figures.
Inventors:
;
Issue Date:
OSTI Identifier:
6609230
Assignee:
University of California, Alameda, CA (United States) PTO; EDB-95-031595
Patent Number(s):
US 5375595; A
Application Number:
PPN: US 8-032942
Contract Number:
W-7405-ENG-36
Resource Relation:
Patent File Date: 17 Mar 1993
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; EYES; PRESSURE MEASUREMENT; ACOUSTIC MEASUREMENTS; FIBER OPTICS; MAN; OPHTHALMOLOGY; ANIMALS; BODY; BODY AREAS; FACE; HEAD; MAMMALS; MEDICINE; ORGANS; PRIMATES; SENSE ORGANS; VERTEBRATES 551000* -- Physiological Systems