Tonometer

Details Tonometer Tonometer

1992-12-29

1994-04-05

Cohen, Lee S.

Surgery

Truss

Pad

128652, A61B 316

Patent

active

052995739

ABSTRACT:
A non-contact type tonometer in which an air is sprayed on an eye to be examined to deform the cornea and measure the intraocular pressure of the eye to be examined. The tonometer is provided with a cylinder, a piston for compressing the air in the cylinder, a deformation detection system for detecting deformation of the cornea sprayed with the air, and a driving system for driving the piston and having a piston driving spring and a spring operation mechanism. When a measurement is performed, the force is accumulated in the spring, then released by the mechanism.

REFERENCES:
patent: 4817620 (1989-04-01), Katsuragi et al.
patent: 4825873 (1989-05-01), Kohayakawa
patent: 4951670 (1990-08-01), Tanaka et al.
patent: 4991584 (1991-02-01), Kobayashi et al.
patent: 5076274 (1991-12-01), Matsumoto

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