Tonometer

Details Tonometer Tonometer

1975-07-14

1976-08-31

Gill, James J.

Measuring and testing

Ductility or brittleness

A61B 316

Patent

active

039772373

ABSTRACT:
A device for determining the level of intraocular pressure by applanation. The device includes a testing piston of precise weight which has one planar surface with an adjacent circular area of a predetermined radius. The weight of the piston flattens an area of the cornea being examined, and depending upon the intraocular pressure, the flattened area will be less than or greater than the circular area.

REFERENCES:
patent: 3452589 (1969-07-01), Hargens et al.
patent: 3531984 (1970-10-01), Halberg
patent: 3597964 (1971-08-01), Heine
patent: 3706304 (1972-12-01), Sisler
patent: 3832891 (1974-09-01), Stuckey

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