Eye surgical procedure

US10959883B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Jon Dishler · Cherry Ridge, US
• Mark Bischoff · Jena, DE

Key dates

• Filing date: Dec 31, 2019
• Grant date: Mar 30, 2021
• Expiry date: Dec 31, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00878
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for generating control data for a treatment device includes providing cornea data based on data of a refractive correction and specifying the cornea incision surfaces. The cornea incision surfaces include a cap incision surface disposed beneath a surface layer of corneal tissue and partially defining a selected lenticule volume and a lenticule incision surface disposed beneath the cap incision surface and further defining the selected lenticule volume. The method further includes generating a control data record for the cornea incision surfaces for purposes of controlling the laser apparatus. The cap incision surface is irregularly shaped and has extensions into surrounding tissue, and/or the lenticule incision surface is irregularly shaped and has extensions into surrounding tissue. The lenticule incision surface and the cap incision surface isolate the selected lenticule volume.