By: Andrew Seitler

 Practical retinal prosthesis for people afflicted with progressive loss of photoreceptor cells.  Retinal chip implanted on the back of eye  Create a simple yet effective form of power

 University of Southern California’s Doheny Eye Institute is using RF signals to transmit both data and power to the retinal implant.  Stanford University is using ambient light entering the eye for both data and power.  For 2 years a 60-pixel retina has been used in clinical trials known as the Argus II.

 Stanford Ophthalmology department recently discovered migration of retinal cells.  Sub-retinal implant preserves axonal connections to the retina above the implant.

 Uses goggle mounted camera  Transmits from goggles using pulsed IR  Photodiodes convert pulses of light into pulsed current from intraocular photovoltaic

 University of Southern California’s Biomimetric MicroElectronic Systems Engineering Research Center boasts a pixel test system.  Expecting nearly 5 years before clinical trials  More progressively they want to fit everything entirely into the eye.

 Entirely implantable device  Miniature camera system  Use light we already see with to power and give detail to newer more effective systems.  Use carbon nanotubes for designs  Increase safety for long term implants  Drastically decrease need to power circuit

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