Method for producing OCT images and other images of an eye including reducing the intensity of reflected light

US10213099B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Ferid Bajramovic · Jena, DE
• Ralf Ebersbach · Schmölln, DE
• Stephan Laqua · Jena, DE

Key dates

• Filing date: Sep 27, 2013
• Grant date: Feb 26, 2019
• Expiry date: Nov 17, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B3/14
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for measuring the geometric parameters of the eye. These measurements, known by the term biometrics, are particularly significant for the calculation of intraocular lenses after previous refractive cornea surgery. OCT images and other images are recorded simultaneously, the intensity of the reflected light generated during the OCT image recordings being lower by a factor of 2, by a factor of 10 or by a factor of 100, than the intensity of the illumination light of the other image recordings. The solution provides a method for producing other image recordings, in addition to OCT recordings, in the form of representations of the sclera or of the fundus, or keratometric, topographic or biometric measurements, or even short image sequences, for instance, while aligning the device with the eye.