The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 2023
Filed:
May. 11, 2017
Erasmus University Medical Center Rotterdam, Rotterdam, NL;
Johannes van der Steen, Rotterdam, NL;
Johannes Jacob Mient Pel, Rotterdam, NL;
Jochem Jesse Visser, Rotterdam, NL;
Erasmus University Medical Center Rotterdam, Rotterdam, NL;
Abstract
Method and contact lens () for measuring a subject's three dimensional eye movement including torsional movement. A video camera () is provided for recording an image of the subject's eye (). The contact lens () is provided for placement over the subject's eye (). The contact lens () comprises one or more markers () that are detectable by the video camera () and are positioned at a lateral offset (D) with respect to a central part () of the contact lens (). The one or more markers () are configured for detecting torsional rotation (R) of the subject's eye () around a line of sight axis (C) of the subject's eye () by using the video camera () to track a position of the one or more markers ().