Opthalmic apparatus for measuring the refractive power of a lens

Details Opthalmic apparatus for measuring the refractive power of a lens Opthalmic apparatus for measuring the refractive power of a lens

1991-11-27

1993-12-14

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351205, 351214, 351221, A61B 310

Patent

active

052707490

ABSTRACT:
An ophthalmic apparatus has a diopter adjustment which adjusts the diopter of a target presented to an eye under test based on measurement of the refractive index of a lens put on the eye under test so that the diopter of the target matches the diopter of the eye under test.

REFERENCES:
patent: 4861154 (1989-08-01), Sherwin et al.
patent: 4929076 (1990-05-01), Masuda et al.

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