Flexible ultrasound-induced retinal stimulating piezo-arrays for biomimetic visual prostheses.

ABSTRACT: Electronic visual prostheses, or biomimetic eyes, have shown the feasibility of restoring functional vision in the blind through electrical pulses to initiate neural responses artificially. However, existing visual prostheses predominantly use wired connections or electromagnetic waves for powering and data telemetry, which raises safety concerns or couples inefficiently to miniaturized implant units. Here, we present a flexible ultrasound-induced retinal stimulating piezo-array that can offer an alternative wireless artificial retinal prosthesis approach for evoking visual percepts in blind individuals. The device integrates a two-dimensional piezo-array with 32-pixel stimulating electrodes in a flexible printed circuit board. Each piezo-element can be ultrasonically and individually acti

SUBMITTER: Jiang L 

PROVIDER: S-EPMC9253314 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature