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1. (WO2017151329) DEVICE, SYSTEM AND METHOD FOR DETECTING A DIRECTION OF GAZE BASED ON A MAGNETIC FIELD INTERACTION

Pub. No.:    WO/2017/151329    International Application No.:    PCT/US2017/018406
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Sat Feb 18 00:59:59 CET 2017
IPC: G02C 7/04
A61B 3/113
A61F 2/16
G01R 33/07
Applicants: VERILY LIFE SCIENCES LLC
Inventors: RAKHYANI, Anil Kumar Ram
O'DRISCOLL, Stephen
Title: DEVICE, SYSTEM AND METHOD FOR DETECTING A DIRECTION OF GAZE BASED ON A MAGNETIC FIELD INTERACTION
Abstract:
Techniques and mechanisms for determining a direction of gaze by a user of an ophthalmic device. In an embodiment, at least a portion of a magnetic field is generated by one of the ophthalmic device or an auxiliary reference device while the ophthalmic device is disposed in or on an eye of the user, and while the auxiliary reference device is adhered on the user's skin or under a surface of the skin. The ophthalmic device and the auxiliary reference device interact via a magnetic field, and the interaction is detected with one or more sensors of the ophthalmic device. In another embodiment, the ophthalmic device stores predetermined reference information which corresponds magnetic field signal characteristics with various respective directions of gaze. Based on the sensor information and the reference information, a controller of the ophthalmic device determines a direction in which the eye of the user is gazing.