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Augmented-view for restricted visual field: multiple device implementations.

Fernando Vargas-Martín1, Eli Peli

  • 1Laboratorio de Optica, Departamento de Física, Universidad de Murcia, Spain. vargas@um.es

Optometry and Vision Science : Official Publication of the American Academy of Optometry
|December 5, 2002
PubMed
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This study developed an augmented-view device to help patients with tunnel vision. The device effectively expanded visual fields, though ergonomic improvements are needed.

Area of Science:

  • Ophthalmology
  • Human-Computer Interaction
  • Assistive Technology

Background:

  • Severely restricted peripheral visual fields, commonly known as tunnel vision, significantly impair daily functioning.
  • Current assistive technologies offer limited solutions for expanding the visual field in patients with conditions like retinitis pigmentosa.

Purpose of the Study:

  • To create and evaluate augmented-view devices combining see-through head-mounted displays with minified wide-field contour information.
  • To assess the effectiveness and user acceptance of these devices for patients with tunnel vision.

Main Methods:

  • Developed multiple augmented-view device prototypes using commercial off-the-shelf components.
  • Evaluated prototypes in real-world conditions (day and night) with two retinitis pigmentosa patients.

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Main Results:

  • Demonstrated effective expansion of the visual field for participating patients.
  • Gathered patient feedback on preferences for device properties, specific devices, and feature combinations.

Conclusions:

  • The augmented-view concept is beneficial for patients with visual field impairments.
  • Patients highlighted the need for more ergonomic designs compared to the evaluated prototypes.
  • Discussion includes benefits, limitations, and potential improvements for future augmented-view devices.