Improved localisation and discrimination of heat emitting household objects with the artificial vision therapy system by integration with thermal sensor

Sandra R. Montezuma, Susan Y. Sun, Arup Roy, Avi Caspi, Jessy D. Dorn, Yingchen He

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Aim To demonstrate the potential clinically meaningful benefits of a thermal camera integrated with the Argus II, an artificial vision therapy system, for assisting Argus II users in localising and discriminating heat-emitting objects. Methods Seven blind patients implanted with Argus II retinal prosthesis participated in the study. Two tasks were investigated: (1) localising up to three heat-emitting objects by indicating the location of the objects and (2) discriminating a specific heated object out of three presented on a table. Heat-emitting objects placed on a table included a toaster, a flat iron, an electric kettle, a heating pad and a mug of hot water. Subjects completed the two tasks using the unmodified Argus II system with a visible-light camera and the thermal camera-integrated Argus II. Results Subjects more accurately localised heated objects displayed on a table (p=0.011) and discriminated a specific type of object (p=0.005) presented with the thermal camera integrated with the Argus II versus the unmodified Argus II camera. Conclusions The thermal camera integrated with the artificial vision therapy system helps users to locate and differentiate heat-emitting objects more precisely than a visible light sensor. The integration of the thermal camera with the Argus II may have significant benefits in patients' daily life.

Original languageEnglish (US)
Pages (from-to)1730-1734
Number of pages5
JournalBritish Journal of Ophthalmology
Volume104
Issue number12
DOIs
StatePublished - Dec 1 2020

Bibliographical note

Funding Information:
Funding This study was funded by the University of Minnesota Center for Applied Translational Sensory Science, Minnesota Lions Vision Foundation and VitreoRetinal Surgery Foundation.

Publisher Copyright:
© 2020 BMJ Publishing Group. All rights reserved.

Keywords

  • prosthesis
  • retina
  • vision

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