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EETE DEC 2014

A point-of-care system for glucose monitoring. (Image: UCSD) Diagram of nano-engineered retinal prosthesis. (Image: department aims to “advance the current state of retinal prostheses for the treatment of neurodegenerative blindness” by more accurately measuring retina activity and further explore effective phosphenes -- the phenomenon of seeing light without light entering the eye. Researchers can monitor a degenerating retina by sending controlled electrical stimulation pulses on the intact retinal ganglion cells. Such pulses can elicit visual perceptions on the degenerated retina. To more easily monitor phosphenes from UCSD) the failing retina, the department developed a retinal prosthesis with a light sensitive electrode array positioned in subretinal areas. The prosthesis also has an implanted integrated circuit and wireless power for data telemetry, allowing researchers to note different types of retinal ganglion cells and adapt the electrical stimulation pattern. The IC was able to transmit 6.78 Mbits/s data and deliver up to 6 mW of power over 13.56 MHz. www.electronics-eetimes.com Electronic Engineering Times Europe December 2014 37


EETE DEC 2014
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