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A microsystem based microimplant with an optically powered single-channel stimulator was designed and developed as test system for an epi-retinal vision implant. Biostability of the hybrid assembly and the encapsulation materials were evaluated in pilot experiments in chronic implantations in a cat animal model. The implant was fabricated on a flexible polyimide substrate with integrated platinum...
Electrical stimulation of the retina elicits visual perception in patients with retinitis pigmentosa. Using the potentials of microsystem technology, neural prostheses to restore vision become feasible that are completely implantable in the eye. In this paper, we describe the development of an inductively coupled epiretinal vision prosthesis. Microelectronic chips for data encoding and stimulation...
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