Patent · US Active

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

US10327630B2 · kind B2 · utility

0Cited by

6References

19Claims

0Family size

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	Jun 25, 2019
Priority date	—
Expiry date	Mar 23, 2038

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B3/04
WIPO fieldMedical technology
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.