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:
Dec. 09, 1980
Filed:
Dec. 18, 1978
Applicant:
Inventors:
William Richards, Medway, MA (US);
Bernard Grolman, Worcester, MA (US);
Joseph W Kantorski, Southbridge, MA (US);
Assignee:
American Optical Corporation, Southbridge, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ; A61B / ; G03B / ;
U.S. Cl.
CPC ...
351-7 ; 351 14 ; 351 16 ; 351 39 ; 354 62 ;
Abstract
An instrument for photographing the ocular fundus is aligned by using a physical aperture designed to permit illumination of only a small area of the optic disc for minimal patient awareness of incident light and corresponding pupil dilation without mydriatics. The increased field of view and obliquity of viewing afforded by pupil dilation permits flashing of the fundus for photographic recording without image obscuring corneal reflections. The light restricting aperture is removed immediately before photographic recording.