Applanation tonometer

Details Applanation tonometer Applanation tonometer

1990-07-13

1993-04-20

Shay, Randy C.

Surgery

Truss

Pad

A61B 316

Patent

active

052033317

ABSTRACT:
In the housing of the tonometer is disposed a forehead support capable to be displaced against the force of a spring and which can be locked rigidly in the housing in a determined position by a locking tooth which engages in an indentation. By means of a linear motor, a measuring body can be displaced toward the eye in order to measure in the known way the intracocular pressure. The result of the measurement is stored and indicated on a display. Due to the stable support of the tonometer by means of the forehead support and a full automatic control of the measuring process, the tonometer can serve for self tonometering, that is the person experimented upon, resp. the patient can proceed to the measure of its own intraocular pressure without any help from the outside. For this reason, the measurement can take place without important expenses, relatively often and at any times which guarantees a reliable diagnosis.

REFERENCES:
patent: 3446061 (1969-05-01), Draeger et al.
patent: 3756073 (1973-09-01), Lavallee et al.
patent: 3904280 (1975-09-01), Tate, Jr.
patent: 3934462 (1976-01-01), Rende
patent: 4095859 (1978-06-01), Decker et al.
patent: 4735209 (1988-04-01), Foody
Zeimer et al., "An Instrument for Self-Measurement of Intraocular Pressure" IEEE Transac. on Biomed. Engineering, vol. BME-29, No. 3, Mar. 1982, pp. 178-183.

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