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

Patent · Sat Jan 01 04:00:00 EST 1994

OSTI ID:869670

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

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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
• 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

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