Artificial retina device

Details Artificial retina device Artificial retina device

A - Human Necessities

61

F

345/1, 3/111, 12

A61F 2/14 (2006.01) A61F 9/007 (2006.01) A61F 9/08 (2006.01) A61N 1/08 (2006.01) A61N 1/36 (2006.01) H01L 27/14 (2006.01) H01L 27/146 (2006.01)

Patent

CA 2022544

A silicon chip device composed of a large array of densely packed microphotodiodes is implanted between the inner and outer retina layers, in patients with vision-deficient eyes suffering from retinal dysfunction, to allow for useful formed vision. The photoactive surface of each photodiode, with its silicon deposited or etched electrode, point towards the incident light. The device produces an amplitude- modulated current to stimulate the inner retinal layer. The device is intrinsically inert due to its doped silicon substrate nature.

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