Bright ring keratoscope

Details Bright ring keratoscope Bright ring keratoscope

1981-04-23

1984-01-17

Corbin, John K.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351247, A61B 310, A61B 300

Patent

active

044261411

ABSTRACT:
A hand-held keratoscope designed to project a bright circular ring on the cornea having a circular glass ring attached to a handle by a retainer ring with the circular glass ring having a flat polished top surface and a frosted inward sloping bottom surface.

REFERENCES:
patent: 2016780 (1935-10-01), Hartinger
patent: 3248162 (1966-04-01), Knoll
patent: 4165744 (1979-08-01), Cravy et al.
patent: 4172639 (1979-10-01), Lang et al.

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