Eye fatigue simulator for optometry

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type

Patent

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Details

351234, 351222, A61B 302

Patent

active

045764549

ABSTRACT:
A simulation card for simulating the eye fatigue of a user of a display screen. The simulation card is adapted to mount in front of a lens changing apparatus. An opening in the card permits the eye doctor to examine the patients eyes while the patient focuses on images that surround the opening. A light source behind the card projects through a diffuser screen e.g., frosted "Mylar" plastic film to simulate, on the viewing screen, the images of a display screen.

REFERENCES:
patent: 2282494 (1942-05-01), Potter
patent: 4212520 (1980-07-01), Klimsa
patent: 4421392 (1983-12-01), Crick

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