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:
Mar. 15, 1977
Filed:
May. 23, 1975
Applicant:
Inventor:
William H Byler, Winter Park, FL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C / ; G02C / ;
U.S. Cl.
CPC ...
351 46 ; 351 47 ;
Abstract
An optical device especially constructed for preoperative cataract patients comprising an opaque mask attached to spectacle frames or other means for mounting before the eyes. The mask includes a horizontally extending open ended slot providing a transparent area through which the patient's vision is unobstructed. The mask further includes an array of separate transparent areas disposed below the slotted opening. The size and positioning of these areas are interrelated with the slotted opening to provide an increased vertical field of vision while restricting the light striking the patient's eye to a minimum.