Force-triggered applanation tonometer

Details Force-triggered applanation tonometer Force-triggered applanation tonometer

1984-04-13

1986-11-25

Coven, Edward

Surgery

Truss

Pad

A61B 316

Patent

active

046242350

ABSTRACT:
A portion of the cornea or similar flexible membrane is flattened by urging against the cornea a footplate with a measurable force and deriving a signal proportional to the magnitude of the applanated area of the cornea when the applanating force is compared to a threshold which corresponds to a force equal to a selected reference force on the planar footplate contacting the cornea. When the selected reference force signal is reached the area of the applanated region of the cornea is transferred as a signal for scaling by another signal proportional to the force.

REFERENCES:
patent: 3070997 (1963-01-01), Papritz et al.
patent: 3338089 (1967-08-01), Coombs, Jr. et al.
"Fast Automobile Ocular Pressure . . . ", Mackay et al., 6-7-60.

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