Corneal shape measuring apparatus

Details Corneal shape measuring apparatus Corneal shape measuring apparatus

1994-07-18

1997-09-16

Dang, Hung X.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351205, A61B 310

Patent

active

056686234

ABSTRACT:
A corneal shape measuring apparatus includes a system 1 for concentrically projecting a plurality of ring images 6 onto a cornea C, a system 3 for receiving the ring images 6 projected onto the cornea C, and a multipoint detecting circuit 9 and a light emission controlling circuit 10 each for avoiding the overlap of adjacent ring images of the ring images 6 projected onto the cornea C.

REFERENCES:
patent: 4834529 (1989-05-01), Barrett
patent: 4917458 (1990-04-01), Matsumura
patent: 4998819 (1991-03-01), Labinger et al.

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