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:
Feb. 27, 2001
Filed:
Jul. 16, 1998
Vladimir Lemberg, Belmont, CA (US);
Visx, Incorporated, Santa Clara, CA (US);
Abstract
A method for laser treatment of the eye using one or more diffractive optical elements for producing unique treatment segments within an ablation zone on the eye. The treatment segments may be annular, pie-shaped, or have other geometries or patterns selected to apply energy in a particular manner, usually in a non-overlapping manner so that energy dosages can be precisely controlled. In a first embodiment of the method, a single diffractive optical element is used and a beam expander expands or converges the beam to achieve the different treatment segments. In a second embodiment, a plurality of diffractive optical elements are used, each of which produces a single treatment segment.