June 2020
Volume 61, Issue 7
Open Access
ARVO Annual Meeting Abstract  |   June 2020
The effect of see-through digital spectacles on eye scanning behavior of patients with peripheral visual field losses
Author Affiliations & Notes
  • Ahmed Sayed
    Electrical Engineering and Computer Science, MSOE University, Milwaukee, Wisconsin, United States
    Biomedical Engineering, Helwan University, Cairo, Helwan, Egypt
  • MD Baharul Islam
    Bascom Palmer Eye Institute, University of Miami, Miami, Florida, United States
    Department of Computer Science and Game Development, American University of Malta, Malta
  • Taher Kamel Eleiwa
    Bascom Palmer Eye Institute, University of Miami, Miami, Florida, United States
  • Eyub Ozcan
    Bascom Palmer Eye Institute, University of Miami, Miami, Florida, United States
  • Mohamed Tolba
    Bascom Palmer Eye Institute, University of Miami, Miami, Florida, United States
  • Richard K Parrish II
    Bascom Palmer Eye Institute, University of Miami, Miami, Florida, United States
  • Mohamed Abou Shousha
    Bascom Palmer Eye Institute, University of Miami, Miami, Florida, United States
  • Footnotes
    Commercial Relationships   Ahmed Sayed, Horus LLC (P), University of Miami (P); MD Baharul Islam, None; Taher Eleiwa, None; Eyub Ozcan, None; Mohamed Tolba, None; Richard Parrish II, None; Mohamed Abou Shousha, Horus LLC (P), University of Miami (P)
  • Footnotes
    Support  This research has been partially supported by the National Institute of Health (NIH), United States, under Grant # K23 KEY026118A, NEI core center grant, United Stated, to the University of Miami (P30 EY014801), and Research to Prevent Blindness (RPB), United States. Research and its contents are solely the responsibility of the authors and do not necessarily represent the official view of the funding organizations.
Investigative Ophthalmology & Visual Science June 2020, Vol.61, 922. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Ahmed Sayed, MD Baharul Islam, Taher Kamel Eleiwa, Eyub Ozcan, Mohamed Tolba, Richard K Parrish II, Mohamed Abou Shousha; The effect of see-through digital spectacles on eye scanning behavior of patients with peripheral visual field losses. Invest. Ophthalmol. Vis. Sci. 2020;61(7):922.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Purpose : To study the effect of novel see-through Digital spectacles (DSpecs) on the eye scanning behavior while walking for patients suffering from peripheral visual field (PVF) defects in a case series study.

Methods : We developed the DSpecs as a wearable visual aid utilizing an augmented reality (AR) platform, eye tracking system, a portable mini PC, and a battery. Video processing algorithms of a scene camera in the DSpecs produced personalized visual augmentation profiles to functionally expand their limited PVF. Processed videos were displayed in real time on the AR display based on prior binocular field measurements obtained using the DSpecs diagnostic mode. Twenty patients walked with the DSpecs in a validated obstacle track once with visual augmentation being activated (with expansion) and another time without it (without expansion). The two walking conditions were repeated for each patient and gaze data were recorded and averaged. We calculated four parameters to describe the eye scanning behavior while walking. The parameters were: number of fixations per second, variance of fixation locations, central gaze location score, and mean saccadic amplitude.

Results : We found differences in the mean values of the fixation location variance parameter (21.310 and 36.46 0 with and without expansion, respectively) and the central gaze location score parameter (3.8 and 3.69 with and without expansion, respectively). Statistical testing showed a significant differences between these two parameters mean values (P=0.046, 0.027, respectively, ANOVA), indicating fewer stray eye scanning attempts with more directed gaze on the central path. Mean values of the fixations rate were (2.29, 2.33; fixations/sec; with and without expansion, respectively) and mean saccadic amplitudes were (4.190 and 5.150 with and without expansion, respectively).These two parameters were insignificantly different between the two walking conditions (P=0.898, 0.154, respectively, ANOVA).

Conclusions : The see through DSpecs may improve eye scanning behavior of patients with PVF defects while walking by allowing them to perform more focused scanning attempts.

This is a 2020 ARVO Annual Meeting abstract.

 

Demonstration of eye scanning behavior for two patients with gaze heat maps. Left column shows a scattered gaze as the patients walked with the DSpecs without visual field expansion. Right column shows a more centric eye scanning behavior with field expansion.

Demonstration of eye scanning behavior for two patients with gaze heat maps. Left column shows a scattered gaze as the patients walked with the DSpecs without visual field expansion. Right column shows a more centric eye scanning behavior with field expansion.

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×