Artificial retina device

Details Artificial retina device Artificial retina device

1989-08-08

1991-05-21

Frinks, Ronald

Surgery

Truss

Pad

128784, 623 4, A61N 100, A61F 214

Patent

active

050166336

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.

REFERENCES:
patent: 2760483 (1954-10-01), Tassicker
patent: 3594823 (1971-07-01), Collins
patent: 3628193 (1971-12-01), Collins
patent: 3766311 (1973-10-01), Boll
patent: 3848608 (1974-11-01), Leonard
patent: 3914800 (1975-10-01), Collins
patent: 4272910 (1981-06-01), Danz
patent: 4551149 (1985-11-01), Sciarra
patent: 4601545 (1986-07-01), Kern
patent: 4628933 (1986-12-01), Michelson
Science News, Feb. 2, 1974, vol. 105, No. 5, p. 105.
Science, Jul., 1981.

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