Non-contact tonometer

Details Non-contact tonometer Non-contact tonometer

1989-05-25

1991-07-16

Green, Randall L.

Surgery

Truss

Pad

128652, A61B 316

Patent

active

050316230

ABSTRACT:
A non-contact tonometer includes plural sensor elements as a cornea deformation detecting system in a plane substantially conjugate with an illuminating light source through corneal reflection when the cornea of an eye to be examined is deformed by a predetermined amount, whereby measurement of the eye pressure is made possible even if the alignment of the apparatus relative to the eye to be examined is inaccurate.

REFERENCES:
patent: 3585849 (1971-06-01), Grolman
patent: 3756073 (1973-09-01), Lavallee et al.
patent: 3832890 (1974-09-01), Grolman et al.
patent: 4580559 (1986-04-01), L'Esperance
patent: 4724843 (1988-02-01), Fisher
patent: 4817620 (1989-04-01), Katsuragi et al.
patent: 4825873 (1989-05-01), Kohayakawa

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