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. 06, 1987
Filed:
Dec. 26, 1984
Applicant:
Inventors:
Robert W Massof, Baltimore, MD (US);
John N Mangat-Rai, Gaithersburg, MD (US);
Assignees:
LKC Systems, Inc., Gaithersburg, MD (US);
Vision Research Associates, Inc., Baltimore, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351243 ; 351224 ; 351246 ;
Abstract
The present invention psychophysically detects earliest signs of loss of vision due to nerve loss in glaucoma and ocular hypertension. An instrument employs a dynamic random dot background field and a movable target that consists of a circular area in which the dots are spatially and temporally coherent. Thus, visual fields will be based on pattern discrimination rather than on conventional measures of luminance discrimination.