Damien C. Rodger*, pupil Member, IEEE, Wen Li, Student Member, IEEE, Hossein Ameri, Aditi Ray, James D. Weiland, Member, IEEE, Mark S. Humayun, Member, IEEE, and Yu-Chong Tai, Senior Member, IEEE
Abstract-We present the first pliable microelectrode arrays designed for intraocular implantation that utilize parylene C as their uncomplicated structural and insulating material. These electrodes are fabricated as a make out component of an intraocular retinene prosthesis comprising a radio-frequency loop for author and entropy transfer, a bundled high lead-count telemetry-recovery and driving ASIC, and a high stringency epiretinal stimulating microelectrode array for the treatment of age-related cecity in humans. Electrochemical tests have demonstrated that these thin-film platinum electrodes carry through optimally for neuronal stimulation. A novel ergonomic MEMS geometry for a complete intraocular formation with capsular retaining wings that enables all the components of the system to be implanted and retained within the lens contraction and vitreous cavity of the eye is also presented. The efficacy of this geometry when compared with a previous model without capsular retaining wings has been verified by surgical implantation in animal models.
BACKGROUND
Low-resolution retinal prostheses have shown great promise in enabling subjects ruse from such diseases as retinitis pigmentosa and age-related macular degeneration to perceive visual data [1]. Few researchers contest the hypothesis that a higher density of electrodes placed on the macula would afford the wearer a more useful visual map of the environment, likely restoring such abilities as facial recognition and coarse reading. This nextgeneration retinal prosthesis requires a high-density flexible retinal electrode array and cable, a flexible radio-frequency (RF) coil for wireless power and data recovery, and a high lead-count package for integration of...If you want to get a full essay, station it on our website: Orderessay
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