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:
Jan. 29, 1991
Filed:
Jul. 25, 1988
Applicant:
Inventors:
Adrian R Hill, Oxon, OX13 6QG, GB;
Arthur E Burgess, Fintry, Glasgow G63 OXE, GB;
Barnaby C Reeves, Oxford, GB;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351239 ; 354243 ;
Abstract
Apparatus for quantifying visual function defects comprises a plurality of testing elements (1) having a surface (3) provided with a selected visual stimulus (5) and with a machine readable code (6) for uniquely identifying the stimulus (5). The apparatus further comprises a light pen (12) for reading the code (6) on each element (1) and a microprocessor (20) for analysing the codes (6) read by the light pen (12) in order to quantify the visual function defect.