TL;DR
This paper introduces VR-SPV, a virtual reality toolbox that simulates bionic vision using a validated computational model, enabling better prediction of visual outcomes and aiding in the development of neuroprosthetic devices.
Contribution
The paper presents an open-source VR simulation tool that incorporates biological realism to predict visual experiences in bionic vision users.
Findings
Accurate phosphene modeling improves prediction of visual performance.
Simulated distortions significantly affect letter recognition and obstacle avoidance.
VR-SPV facilitates systematic evaluation of bionic vision performance.
Abstract
Bionic vision uses neuroprostheses to restore useful vision to people living with incurable blindness. However, a major outstanding challenge is predicting what people 'see' when they use their devices. The limited field of view of current devices necessitates head movements to scan the scene, which is difficult to simulate on a computer screen. In addition, many computational models of bionic vision lack biological realism. To address these challenges, we present VR-SPV, an open-source virtual reality toolbox for simulated prosthetic vision that uses a psychophysically validated computational model to allow sighted participants to 'see through the eyes' of a bionic eye user. To demonstrate its utility, we systematically evaluated how clinically reported visual distortions affect performance in a letter recognition and an immersive obstacle avoidance task. Our results highlight the…
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