Eye-tracking visual prosthetic and method
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United States of America Patent
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Feb 17, 2015
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app pub date -
Jun 15, 2012
filing date -
Oct 24, 2005
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Abstract
An improved prosthesis and method for stimulating vision nerves to obtain a vision sensation that is useful for the patient that has lost vision due to AMD, RP, and other diseases. The invention utilizes infrared light to cause action potentials in the retinal nerves similar to those which result from rods and cones stimulated by visible light in healthy retinas. In some embodiments, the invention provides a prosthesis that generates a stimulation pattern of infrared light from an external stimulator array through the eye and focusing the stimulation pattern of infrared light on the retina, especially the fovea. Some embodiments the invention provides improved resolution down to a group of nerves, or even the individual nerve level, with sufficient energy density so as to cause a desired action potential.
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