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:
Jan. 18, 1994
Filed:
Mar. 13, 1992
Peter J McDonnell, La Canada-Flintridge, CA (US);
Stephen L Trokel, New York, NY (US);
Other;
Abstract
A method for modification of the corneal surface, in which a gel is applied to the cornea and molded in situ to create an ablation mask. This ablation mask has a posterior surface substantially identical to that of the surface to be treated. A shaping means (such as a contact lens) having a posterior curvature corresponding to the desired final profile of the cornea is superimposed on the gel prior to the setting of the gel; the anterior curvature of the ablation mask is equal to that of the posterior curvature of the shaping means. The gel has essentially the identical ablation properties of the cornea, which is generally not the case when other non-biological materials (such as plastics materials) are used. A preferred gel for use in forming the ablation mask is collagen gel.