One the most well-known retinal implants in the world today is the Argus2 from Second Sight, which is a silicon-based prothesis.

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These implants convert light into electric current that stimulates local retinal neurons, which then send signals to the brain, meaning no wires are necessary to stimulate the retina.

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The various retinal prostheses under development all use video cameras to send light information to chip implants.

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