Ophthalmologic laser device and method for preventing and treating aftercataract

US10478342B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Manfred Dick · Gefell, DE
• Juergen Kuehnert · Jena, DE
• Matthias Reich · Jena, DE

Key dates

• Filing date: Jul 26, 2012
• Grant date: Nov 19, 2019
• Expiry date: Aug 3, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00889
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An ophthalmologic laser device includes a pulsed laser configured to produce radiation focused along at treatment beam path. A variably adjustable beam deflector unit and a focusing lens system are disposed in the treatment beam path. The deflector unit is configured to focus the radiation in different target volumes. Measuring equipment is configured to determine a shape and position of optical interfaces along a detection beam path. A control unit is configured to control the laser and the deflector unit and to implement steps including determining a shape and position of an interface of a membrane of a capsular bag of an eye located in a treatment area using the measuring equipment, determining coordinates of a target volume such that, on irradiation of the target volume, a pressure wave runs from the target volume to the anterior or posterior membrane, and adjusting the deflector unit to the target determined volume.