Apparatus for determining intraocular pressure

Details Apparatus for determining intraocular pressure Apparatus for determining intraocular pressure

1990-09-14

1993-03-02

Shay, Randy C.

Surgery

Truss

Pad

128645, A61B 316

Patent

active

051900424

ABSTRACT:
To determine intraocular pressure with a tonometer in which a measurement prism presses against the human eye with a given force and a corresponding relationship is established between the force and the area aplanated thereby, it is proposed that a plurality of measured values of force and aplanated area, each being associated with the other, be determined per unit of time during the course of a continuous increase in pressure by means of the power-driven, spring-pretensioned motion of the measurement prism and processed in the form of a curve in such a manner that the intraocular pressure can be determined differentially from the plurality of measured values.

REFERENCES:
patent: 3446061 (1969-05-01), Draeger et al.
patent: 3470736 (1969-10-01), Bartfay
patent: 4192317 (1980-03-01), Munnerlyn et al.
patent: 4213464 (1980-07-01), Katz et al.
patent: 4344037 (1982-08-01), Ragsdale
patent: 4523597 (1985-06-01), Sawa et al.
patent: 4621644 (1986-11-01), Eilers
patent: 4665923 (1987-05-01), Kobayashi

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