Surgery – Truss – Pad
Patent
1987-07-09
1989-05-02
Coven, Edward M.
Surgery
Truss
Pad
A61B 316
Patent
active
048258733
ABSTRACT:
A non-contact eye pressure meter is provided with a cornea deforming system for blowing a compressed fluid of a pressure variable with time against the cornea of an eye to be examined from a nozzle provided in a predetermined optical member opposed to the eye to be examined, and a deformation detecting system for applying a light beam from a predetermined light source to the eye to be examined past only one area of the interior of the nozzle and the interior of the predetermined optical member which is in the outer peripheral portion of the nozzle and receiving the cornea-reflected light by a predetermined light-receiving element past only the other area. The light source and the light-receiving element are set optically substantially conjugately through corneal reflection when the cornea of the eye to be examined is deformed to a predetermined curvature.
REFERENCES:
patent: 3232099 (1966-02-01), Motchenbacher
patent: 3304769 (1967-02-01), Stauffer
patent: 3538754 (1970-11-01), Grolman et al.
patent: 3756073 (1973-09-01), Lavallee et al.
patent: 3832890 (1974-09-01), Grolman et al.
Canon Kabushiki Kaisha
Coven Edward M.
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