The PRIMA photovoltaic retinal implant is a 2 millimeter by 2 millimeter, 30-micrometer-thick chip designed to be implanted beneath the retina; when paired with smart glasses that transmit images as near-infrared light, the implant converts that light into small electrical signals that stimulate retinal neurons or the optic nerve.
October 28, 2025
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Technical description of the PRIMA retinal implant and its image-to-signal conversion mechanism