Ophthalmologic apparatus

Details Ophthalmologic apparatus Ophthalmologic apparatus

1985-11-25

1987-05-19

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351247, A61B 310

Patent

active

046662693

ABSTRACT:
An ophthalmologic apparatus including an illuminating light source, an annular index, and an optical system for projecting the index from an infinite distance to a cornea of an eye to be examined, in which the index is formed integrally with the projecting optical system.

REFERENCES:
patent: 3248162 (1966-04-01), Knoll
patent: 3639043 (1972-02-01), Townsley
patent: 3797921 (1974-03-01), Kilmer et al.
patent: 3932030 (1976-01-01), Hasegawa et al.
patent: 4046463 (1977-09-01), La Russia
patent: 4159867 (1979-07-01), Achatz et al.
patent: 4256385 (1981-03-01), Cohen
patent: 4426141 (1984-01-01), Holcomb

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