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:
Oct. 12, 2004
Filed:
Aug. 15, 2001
Applicant:
Inventors:
Christof Donitzky, Eckental, DE;
Joachim Löffler, Heroldsberg, DE;
Assignee:
Wavelight Laser Technologie AG, Erlangen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 1/818 ;
U.S. Cl.
CPC ...
A61B 1/818 ;
Abstract
The invention relates to a device used for the photorefractive keratectomy of the eye, especially LASIK, uses an UV laser beam for ablating parts of the cornea. A centering light beam is arranged coaxially with respect to the fixing light beam and has a wavelength different from that of the fixing light beam. The device is provided with devices for measuring and evaluating the position of the scattered light/Fresnel reflection of the centering light beam on the front face of the cornea. The point in which the centering light beam passes through the front face of the cornea is used as the center of ablation.