Artificial retina device

Surgery – Truss – Pad

Patent

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Details

128784, 623 4, 606 1, 606107, A61N 100, A61F 214, A61B 1700

Patent

active

050242237

ABSTRACT:
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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Science, Jul., 1981.

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