Refractive treatment device with slit illumination

US7810927B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Gerard Antkowiak · Jena, DE
• Marco Hanft · Jena, DE
• Elke Ebert · Jena, DE
• Karsten Festag · Jena, DE
• Juergen Ledermann · Jena, DE

Key dates

• Filing date: Nov 8, 2007
• Grant date: Oct 12, 2010
• Expiry date: Dec 29, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00872
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A solution by which an examination of the cornea for possible encapsulations, air bubbles, or other irregularities following a refractive surgery can be carried out directly at the treatment device instead of the patient having to be transferred to an examination device.The additional slit illumination system includes two slit projector units substantially symmetrically mounted at an angle of about 40° to the optical axis of the refractive treatment device, and fixed and focused on the eye of the patient to be examined. The slit projector units include a light source, a projection optical system, and beam forming and/or conducting optical components.Although intended for surgical microscopes, it can also be used for other opthalmologic treatment devices that would benefit from a slit projection system for the examination before, during, or after the treatment procedure.