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Development of a chemical retinal prosthesis

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Retinal prostheses that seek to restore vision to those suffering from degeneration of photoreceptors are now being employed for some patients. Current technology is built upon the ability to excite residual retinal circuitry through electrical stimulation. We have been exploring the feasibility of using chemical stimulation as an alternative approach; it offers the potential advantage of providing the brain with a more natural neural signal as OFF and ON pathways can potentially be activated differentially.

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