Non-invasive measurement of eyeball pressure using vibration

Details Non-invasive measurement of eyeball pressure using vibration Non-invasive measurement of eyeball pressure using vibration

1991-06-27

1993-10-12

Shay, Randy C.

Surgery

Truss

Pad

128649, A61B 316

Patent

active

052516270

ABSTRACT:
A tonometer. The tonometer includes means (6) for generating a surface wave on the eye. The surface wave is monitored at a receiving transducer (10) and phase information is extracted using a phase meter (14). Using the phase information the velocity of the wave may be determined and from this information the pressure in the eyeball may be determined in signal processor (16). The eyeball pressure may be displayed in display (18).

REFERENCES:
patent: 3613666 (1971-10-01), Hobbs
patent: 3690158 (1972-09-01), Lichtenstein et al.
patent: 3763696 (1973-10-01), Krakau
patent: 4576176 (1986-03-01), Myers
Krakau, Exp. Eye Res., (1971) 11:140 (Abstract).
Roth et al., J. Am. Opometric Assoc. (1963) 34:971-974.
Guttmann et al., J. Am. Optometric Assoc. (1963) 34:975-977.

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