Method and system for determining the subjective refraction properties of an eye

US10219689B2 · kind B2 · utility

Assignee

• Carl Zeiss Vision International GmbH · DE

Inventors

• Arne Ohlendorf · Tübingen, DE
• Siegfried Wahl · Donzdorf, DE
• Jesús-Miguel Cabeza Guillén · Aalen, DE

Key dates

• Filing date: Mar 23, 2018
• Grant date: Mar 5, 2019
• Expiry date: Mar 23, 2038

Classification

• Technology area (CPC —): General

Abstract

A system determines the subjective refraction properties of an eye of a test subject perceiving a natural image. The system contains a memory in which at least one natural image is stored; a display device for displaying the at least one natural image from the memory; and a lens arrangement for adjusting various light-refracting elements in an optical path between the eye of the test subject and the display device. The lens arrangement is arranged at a predefined distance from the display device. A corresponding method and the use of a natural image for refraction determination are also disclosed.