Apparatus and method for non-contact, acoustic resonance determination of intraocular pressure
Abstract
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
- Patent Number(s):
- 5375595
- Application Number:
- PPN: US 8-032942
- Assignee:
- University of California, Alameda, CA (United States)
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- 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
Citation Formats
Sinha, D N, and Wray, W O. Apparatus and method for non-contact, acoustic resonance determination of intraocular pressure. United States: N. p., 1994.
Web.
Sinha, D N, & Wray, W O. Apparatus and method for non-contact, acoustic resonance determination of intraocular pressure. United States.
Sinha, D N, and Wray, W O. Tue .
"Apparatus and method for non-contact, acoustic resonance determination of intraocular pressure". United States.
@article{osti_6609230,
title = {Apparatus and method for non-contact, acoustic resonance determination of intraocular pressure},
author = {Sinha, D N and Wray, W O},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {12}
}
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