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1. (WO2018104894) STIMULUS AND EYE TRACKING SYSTEM

Pub. No.:    WO/2018/104894    International Application No.:    PCT/IB2017/057711
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Fri Dec 08 00:59:59 CET 2017
IPC: A61B 3/00
A61B 5/00
Applicants: AUCKLAND UNISERVICES LIMITED
Inventors: THOMPSON, Ben
TURUWHENUA, Jason Te Wharekotua
Title: STIMULUS AND EYE TRACKING SYSTEM
Abstract:
A system and method for stimulus & eye tracking, useful for the determination of the presence or strength of optokinetic nystagmus (OKN) typically for assessing visual acuity, comprises providing a novel visual stimulus effective to elicit OKN, which includes varying the visibility of a visual stimulus element, or displaying a series of visual stimulus elements so that a later displayed element has different visibility relative to an earlier displayed element. Visual stimulus elements may vanish or appear by reducing or increasing intensity, contrast, size and/or width of the elements or element boundaries. Visual stimulus elements comprise a perimeter that is darker than a background and a centre that is lighter than the background, and/or a perimeter that is lighter than a background and a centre that is darker than the background.