Inventors:
Gregory S. Charney - Portland OR
Terrance D. Hohner - Portland OR
Cosmo Salibello - Forest Grove OR
Assignee:
Terrance D. Hohner - Portland OR
International Classification:
A61B 302
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.