The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2004
Filed:
Dec. 23, 2002
Applicant:
Inventors:
Jonathan G. Torrey, Portland, OR (US);
David C. Squire, Beaverton, OR (US);
Assignee:
PRIO Corporation, Beaverton, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 3/02 ;
U.S. Cl.
CPC ...
A61B 3/02 ;
Abstract
This invention is a programmable vision testing apparatus and method for use in conducting optometric examinations of video display terminal (VDT) users. The apparatus uses a digital display screen accurately to represent a VDT used under actual work conditions. Further, a plurality of images can be displayed via the vision testing apparatus to provide a convenient and efficient way to test the eyes of VDT users with a wide variety of individual needs.