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. 27, 1994
Filed:
Oct. 26, 1993
Bahram Khoobehi, Metairie, LA (US);
Stephen D Klyce, New Orleans, LA (US);
Marguerite B McDonald, New Orleans, LA (US);
Sanan B Shaibani, Kenner, LA (US);
Other;
Abstract
A laser (e.g., excimer laser) and masking apparatus performs controlled sculpting of eye surfaces, such as corneal surfaces. The masking system includes a single/multi-layer (e.g., metallic) coated substrate (e.g., fused silica) with multiple openings in the substrate of desired size, shape and spacing to control the power transmission of a laser used in conjunction with the mask. The power transmission is controlled through the use of diffraction and absorption. The power transmission can be attuned to a particular surface by using topographical information of the surface in question. The surgeon can observe the topographical information and then pattern the openings (size, number, shape, spacing) so that reshaping can be done with greater intensity (using larger or more openings) to remove more corneal tissue in areas that the surgeon feels need more reshaping. Areas that need less reshaping can be masked complete by not placing holes or openings in that area of the mask, or by placing fewer or smaller openings.