Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A Wearable Magnetic Eye Tracker

Aniello Donniacuo
ORCID logo ,
Francesca Viberti
* ORCID logo ,
Mario Carucci
,
Valerio Biancalana
ORCID logo ,
Lorenzo Bellizzi
,
Marco Mandalà
Version 1 : Received: 21 September 2023 / Approved: 22 September 2023 / Online: 22 September 2023 (11:26:26 CEST)

A peer-reviewed article of this Preprint also exists.

Donniacuo, A.; Viberti, F.; Carucci, M.; Biancalana, V.; Bellizzi, L.; Mandalà, M. Development of a Magnetoresistive-Based Wearable Eye-Tracking System for Oculomotor Assessment in Neurological and Otoneurological Research—Preliminary In Vivo Tests. Brain Sci. 2023, 13, 1439. Donniacuo, A.; Viberti, F.; Carucci, M.; Biancalana, V.; Bellizzi, L.; Mandalà, M. Development of a Magnetoresistive-Based Wearable Eye-Tracking System for Oculomotor Assessment in Neurological and Otoneurological Research—Preliminary In Vivo Tests. Brain Sci. 2023, 13, 1439.

Abstract

Several eye-tracking technologies have been developed in the last 20 years. This paper aims to present a new kind of eye tracker that can produce detailed information on both eye and head movements using an array of magnetoresistive detectors fixed on the patient’s head and a small magnet inserted in a contact lens, tailored to the subject’s cornea curvature. The software used for data analysis can combine or compare the eye and the head movements and can draw them up as 2D or 3D images. Preliminary data concern a starter patient that was asked to perform several tasks to establish the accuracy, reliability and tolerance of the magnetic eye tracker and the software. The tasks included the evaluation of saccadic eye movements and pursuit, “drawing” shapes or alphabetical letters and reading. Finally, a Head Impulse Test (HIT) was performed for VOR gain estimation, comparing the standard deviation established through vHIT to the one established through this magnetic eye tracker (mHIT). This prototypic device is low invasive, light, relatively low cost and tolerable, with a high grade of reliability and accuracy. All these features might lead to future use of the magnetic eye tracker in neurological and otoneurological fields.

Keywords

eye-tracker, vHIT, eye-movements, search coil

Subject

Medicine and Pharmacology, Neuroscience and Neurology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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