Corneal configuration measuring apparatus

Details Corneal configuration measuring apparatus Corneal configuration measuring apparatus

1987-07-02

1989-03-07

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351247, A61B 310

Patent

active

048100854

ABSTRACT:
A corneal configuration measuring apparatus is disclosed. It comprises target projecting means for projecting target beams from a plurality of targets towards a cornea of an eye to be tested, light receiving means, measuring optical system for projecting the target beams reflected on the cornea towards the light receiving means and forming target reflection images on the light receiving means, and variable power optical system for varying imaging power of the target reflection images to be formed on the light receiving means.

REFERENCES:
patent: 2733634 (1956-02-01), Littman et al.
patent: 3639043 (1972-02-01), Townsley
patent: 3640610 (1972-02-01), Nupuf
patent: 4660946 (1987-04-01), Nakamura

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