Non-contact tonometer

Details Non-contact tonometer Non-contact tonometer

1997-05-09

1999-02-02

Lacyk, John P.

Surgery

Diagnostic testing

Testing aqueous humor pressure or related condition

A61B 316

Patent

active

058657428

ABSTRACT:
A beam of acoustic energy comprising acoustic radiation and the associated acoustic streaming of an ultrasonic beam is used to indent or applanate (flatten) the eye. These two effects produce acoustic pressure on the eye which partially overcomes the IPO of the eye. A concurrent determination of acoustic pressure and the distortion of the eye allows one to determine the IOP.

REFERENCES:
patent: 5148807 (1992-09-01), Hsu
patent: 5375595 (1994-12-01), Sinha et al.
patent: 5396888 (1995-03-01), Massie et al.
patent: 5469848 (1995-11-01), Toleman
patent: 5636635 (1997-06-01), Massie et al.

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