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Electrotherapy medical devices, namely, neuro-stimulation devices for the treatment of blindness; stimulating and recording electrode implants for the treatment of blindness; visual prostheses and visual cortical implants; cortical electrodes integrally attached to implantable cortical stimulators for the treatment of blindness; ocular and retinal prostheses and retinal implants; retinal electrodes integrally attached to implantable retinal stimulators; and systems, namely, electrodes, stimulators, headpieces and wearable video processors, for the treatment of blindness; surgical apparatus and instruments for the treatment of blindness; medical apparatus and instruments for use in surgery for the treatment of blindness; medical devices for the treatment of blindness