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Depth Perception and Spatial Vision01:15

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A Networked Desktop Virtual Reality Setup for Decision Science and Navigation Experiments with Multiple Participants
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Wide-angle simulated artificial vision enhances spatial navigation and object interaction in a naturalistic

Sandrine Hinrichs1,2, Louise Placidet3, Antonin Duret3

  • 1Medtronic Chair in Neuroengineering, Center for Neuroprosthetics and Institute of Bioengineering, School of Engineering, École Polytechnique Fédérale de Lausanne, Geneva, Switzerland.

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|October 25, 2024
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Summary

A wider visual field (45°) significantly improves navigation and task completion for individuals with simulated artificial vision. This approach enhances real-world applicability for vision restoration therapies.

Keywords:
augmented realitynaturalistic environmentretinal implantssimulated artificial visionvisual field size

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Human-Computer Interaction

Background:

  • Current vision restoration therapies (e.g., prosthetics, optogenetics) show promise in clinical settings but struggle with real-world effectiveness.
  • Clinical trial assessments often lack ecological validity, limiting the translation of research findings into practical, everyday benefits for patients.

Purpose of the Study:

  • To develop and validate a novel methodology for assessing the real-world impact of artificial vision using virtual reality (VR) in a naturalistic environment.
  • To investigate the optimal visual field size for simulated artificial vision in common outdoor tasks.

Main Methods:

  • Utilized an immersive VR system integrated with a physical artificial street environment to simulate artificial vision.
  • Assessed participants' performance on navigation and task-completion tasks under varying simulated visual field sizes.

Main Results:

  • A visual field of 45° significantly enhanced navigation efficiency, safety, and task success rates.
  • This visual field size also improved learning, generalization of skills, and the formation of accurate environmental mental representations.
  • Increasing the visual field beyond 45° did not yield substantial additional benefits.

Conclusions:

  • The VR-based naturalistic environment provides a valuable framework for evaluating vision restoration technologies.
  • Optimizing visual field size is crucial for improving the functional outcomes and daily-life applicability of artificial vision systems.