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:
May. 22, 2001
Filed:
Dec. 17, 1999
Applicant:
Inventor:
Kouji Nishio, Tokyo, JP;
Assignee:
Kabushiki Kaisha Topcon, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61B 3/14 ;
U.S. Cl.
CPC ...
A61B 3/14 ;
Abstract
A corneal endothelial cell measuring instrument comprises a monitor for displaying a corneal endothelial cell image picked up, an input device for marking the centers of cell images in the corneal endothelial cell image displayed on the screen of the monitor, a processor for determining the coordinate value of the marked centers, forming a closed curve formed by connecting the plurality of the marked centers, calculating the area of a region enclosed by the closed curve and calculating cell density, i.e., the number of cells per unit area, from the number of the centers on the closed curve and the number of the centers inside the closed curve.