Method for determining vision defects and for collecting data for correcting vision defects of the eye by interaction of a patient with an examiner and apparatus therefor

US6722767B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Manfred Dick · Gefell, DE
• Holger Mäusezahl · Jena, DE
• Eckhard Schroder · Eckental, DE

Key dates

• Filing date: May 31, 2002
• Grant date: Apr 20, 2004
• Expiry date: May 31, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B3/103
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

There is now provided a method for determining vision defects and for collecting data for correcting vision defects of the eye. The method comprises projecting an image into the eye of the patient with an adaptive optical system having adaptive optical elements. The optical characteristics of the optical elements can be individually changed by an electrical signal. The presence of distortions of the image as perceived by the patient is determined by interaction of the patient with the examiner. By way of an electronic control system the optical characteristics of the adaptive optical elements are changed through outputting of an electrical signal to obtain a modified image with minimized distortions in the eye of the patient. The optical characteristics of the adaptive optical elements, as modified, are determined and vision correcting data for the eye being examined are computed from the optical characteristics of the adaptive optical elements, as modified. The method not only takes into consideration the aberrations of the optical imaging system but also the properties of reception and signal processing in the human brain. The method is further characterized in that the correctio…