Spatial mapping for a visual prosthesis

US7957811B2 · kind B2 · utility

Assignee

• Second Sight Medical Products, Inc. · US

Inventors

• Avraham I. Caspi · Rehovot, IL
• Jessy Dorn · Los Angeles, US
• Matthew J. McMahon · Los Angeles, US
• Robert J. Greenberg · Los Angeles, US

Key dates

• Filing date: May 2, 2008
• Grant date: Jun 7, 2011
• Expiry date: Jan 2, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V10/60
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A visual prosthesis and a method of operating a visual prosthesis are disclosed. Neural stimulation through electrodes is controlled by spatial maps, where a grouped or random association is established between the pixels of the acquired image and the electrodes. In this way distortions from the foveal pit and wiring mistakes in the implant can be corrected. Moreover, broken electrodes can be bypassed and a resolution limit can be tested, together with testing the benefit the patient receives from correct spatial mapping.