Cornea shape measuring apparatus

Details Cornea shape measuring apparatus Cornea shape measuring apparatus

1986-02-21

1987-12-01

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351211, A61B 310

Patent

active

047100036

ABSTRACT:
In a cornea shape measuring apparatus wherein a chart for measurement is projected onto the cornea of an eye to be examined and the shape of the corneal reflection image thereof is detected through a measuring optical system to thereby measure the shape of the cornea, there is provided an observation optical system for enabling the corneal reflection image to be always observed. The magnification of the observation optical system is made smaller than the magnification of the measuring optical system and the fore eye portion and the corneal reflection image are always observable.

REFERENCES:
patent: 4312574 (1982-01-01), Wilms
patent: 4315672 (1982-02-01), Muller et al.
patent: 4355871 (1982-10-01), Nenyas et al.

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