Estimating Phosphene Locations Using Eye Movements of Suprachoroidal Retinal Prosthesis Users.

ABSTRACT:

Purpose

Accurate mapping of phosphene locations from visual prostheses is vital to encode spatial information. This process may involve the subject pointing to evoked phosphene locations with their finger. Here, we demonstrate phosphene mapping for a retinal implant using eye movements and compare it with retinotopic electrode positions and previous results using conventional finger-based mapping.

Methods

Three suprachoroidal retinal implant recipients (NCT03406416) indicated the spatial position of phosphenes. Electrodes were stimulated individually, and the subjects moved their finger (finger based) or their eyes (gaze based) to the perceived phosphene location. The distortion of the measured phosphene locations from the expected locations (retinotopic electrode locations)

SUBMITTER: Titchener SA 

PROVIDER: S-EPMC10043502 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature