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

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869670

Sinha, Dipen N ^[1]; Wray, William O ^[1]

---

1. Los Alamos, NM

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• Assignee: Regents of University of Calif. (Alameda, CA)
• Patent Number(s): US 5375595
• OSTI ID: 869670
• Country of Publication: United States
• Language: English

Related Subjects

apparatus
method
non-contact
acoustic
resonance
determination
intraocular
pressure
measuring
changes
eye
investigation
detection
vibrational
resonances
therein
ultrasonic
transducer
operating
resonant
frequency
amplitude
modulated
swept
range
audio
frequencies
human
eyes
resonate
output
therefrom
focused
vibrations
observed
fiber-optic
reflection
vibration
sensor
dependent
readily
determined
baseline
established
amplitude modulated
pressure changes
pressure therein
acoustic resonance
resonant frequency
ultrasonic transducer
vibration sensor
intraocular pressure
resonances therein
human eye
pressure change
/600/