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

Patent · Tue Dec 27 00:00:00 EST 1994

OSTI ID:6609230

Sinha, D N; Wray, W O

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.

• DOE Contract Number: W-7405-ENG-36
• Assignee: University of California, Alameda, CA (United States)
• Patent Number(s): US 5375595; A
• Application Number: PPN: US 8-032942
• OSTI ID: 6609230
• Resource Relation: Patent File Date: 17 Mar 1993
• Country of Publication: United States
• Language: English

Related Subjects

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