Opthalmological measuring apparatus

Details Opthalmological measuring apparatus Opthalmological measuring apparatus

1987-07-15

1989-01-10

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351205, A61B 310

Patent

active

047969890

ABSTRACT:
An ophthalmological measuring apparatus is disclosed. It comprises a projecting systems for projecting a target image to the cornea and retina of an eye to be tested, respectively, a measuring optical system for being introduced a corneal reflecting beam of light and a retina reflecting beam of light from the eye, a light receiving portion for receiving the corneal reflecting beam of light and the retina reflecting beam of light through the measuring optical system and photoelectrically transferring the same, an image displaying device for displaying an image of the anterior portion of the eye based on a signal from the light receiving portion, and a calculating device for calculating and measuring a corneal configuration and an eye refractive power of the eye to be tested based on the signals of the corneal reflecting beam of light and the retina reflecting beam of light detected by the light receiving portion.

REFERENCES:
patent: 4572628 (1986-02-01), Nohda

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