Treatment apparatus for surgical correction of defective eyesight, method of generating control data therefore, and method for surgical correction of defective eyesight

US9370445B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Martin Wiechmann · Jena, DE
• Michael Bergt · Weimar, DE
• Mark Bischoff · Jena, DE
• Markus Sticker · Jena, DE
• Gregor Stobrawa · Jena, DE

Key dates

• Filing date: Feb 17, 2014
• Grant date: Jun 21, 2016
• Expiry date: Mar 7, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00897
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A treatment method and apparatus for surgical correction of defective-eyesight in an eye of a patient, wherein a laser device is controlled by a control device, said laser device separating corneal tissue by irradiation of laser radiation to isolate a volume located within a cornea, wherein the control device controls the laser device to focus the laser radiation, by providing target points located within the cornea, into the cornea, wherein the control device, when providing the target points, allows for focus position errors which lead to a deviation between the predetermined position and the actual position of the target points when focusing the laser radiation, by pre-offsets depending on the positions of the respective target points to compensate for said focus position errors.