Ophthalmic apparatus

Details Ophthalmic apparatus Ophthalmic apparatus

1998-06-29

1999-03-30

Manuel, George

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

A61B 310

Patent

active

058895760

ABSTRACT:
An ophthalmic apparatus including a measuring device for measuring or examining an eye to be examined utilizing reflection of a luminous flux projected into the eye through a pupil, the ophthalmic apparatus comprising a moving device for moving the measuring device relative to the eye, a target projecting device for projecting an alignment target onto a cornea of the eye, a target detecting device for detecting an image of the alignment target, a photographing device for photographing an image of an anterior part of the eye, a pupil position detecting device for detecting a position of the pupil by signals transmitted from the photographing device, a judging device for determining a reference point for alignment based on information on the position of the pupil detected by the pupil position detecting device and the image of the alignment target detected by the target detecting device and an instructing device for giving instructions for making the moving device move based on the reference point determined by the judging device.

REFERENCES:
patent: 5463430 (1995-10-01), Isogai et al.
patent: 5500697 (1996-03-01), Fujieda

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