Design and evaluation of a wearable assistive technology for hemianopic stroke patients

Navid Amini, Jung S. Lim, Farnaz Mohammadi, Clinton Thodos, Benjamin Braun, Hassan Ghasemzadeh, Melissa W. Chun, Kouros Nouri-Mahdavi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


More than one million people in the US suffer from hemianopia, which blinds the vision in one half of the peripheral vision in both eyes. Patients with hemianopia are often not aware of what they cannot see and frequently bump into walls, trip over objects, or walk into people on the side where the peripheral vision is diminished. In this study, we present an augmented reality based assistive technology that expands the peripheral vision of hemianopic patients at all distances. In a pilot trial, we evaluate the utility of this assistive technology for ten hemianopic patients. We measure and compare outcomes related to target identification and visual search in the participants. Improvements in target identification are noted in all participants ranging from 18% to 72%. Similarly, all the participants benefit from the assistive technology in performing a visual search task with an average increase of 24% in the number of successful searches compared to unaided trials. The proposed technology is the first instance of an electronic vision enhancement tool for patients with hemianopia and is expected to maximize the residual vision and quality of life in this growing, yet largely overlooked population.

Original languageEnglish (US)
Title of host publicationISWC 2020 - Proceedings of the 2020 ACM International Symposium on Wearable Computers
PublisherAssociation for Computing Machinery
Number of pages5
ISBN (Electronic)9781450380775
StatePublished - Sep 4 2020
Externally publishedYes
Event2020 ACM International Symposium on Wearable Computers. ISWC 2020 - Virtual, Online, Mexico
Duration: Sep 12 2020Sep 17 2020

Publication series

NameProceedings - International Symposium on Wearable Computers, ISWC
ISSN (Print)1550-4816


Conference2020 ACM International Symposium on Wearable Computers. ISWC 2020
CityVirtual, Online


  • assistive technologies
  • augmented reality
  • hemianopia
  • stroke

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications


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