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:
Sep. 16, 1980
Filed:
Oct. 31, 1978
James E Sheedy, Columbus, OH (US);
Other;
Abstract
Apparatus is provided for testing subjects for fixation disparity. The apparatus includes a first sheet-like element having an opening therein which is spaced from the subject being tested. This opening defines the periphery of a target which is dimensioned to represent a fusion stimulus to the subject. Within the opening there are displayed a sequence of paired first and second discrete, parallel target elements which are mutually spaced and fixed a predetermined distance from each other along the parallel lengthwise extends thereof. A sequence of these element pairs are positioned in regularly spaced order about a movable carrier and presented sequentially at the opening in the course of testing. The angular subtense represented by the spacing of the elements is indicated upon the carrier and when the subject perceives that the elements are mutually aligned, a recordation of angular subtense is made and utilized for diagnostic purposes.