05935155 is referenced by 464 patents and cites 22 patents.

A visual prosthesis comprises a camera for perceiving a visual image and generating a visual signal output, retinal tissue stimulation circuitry adapted to be operatively attached to the user's retina, and wireless communication circuitry for transmitting the visual signal output to the retinal tissue stimulation circuitry within the eye. To generate the visual signal output the camera converts a visual image to electrical impulses which are sampled to selecting an image at a given point in time. The sampled image signal is then encoded to allow a pixelized display of it. This signal then is used to modulate a radio frequency carrier signal. A tuned coil pair having a primary and a secondary coil are used to transmit and receive the RF modulated visual signal which is then demodulated within the eye. The retinal stimulation circuitry includes a decoder for decoding the visual signal output into a plurality of individual stimulation control signals which are used by current generation circuitry to generate stimulation current signals to be used by an electrode array having a plurality of electrodes forming a matrix. The intraocular components are powered from energy extracted from the transmitted visual signal. The electrode array is attached to the retina via tacks, magnets, or adhesive.

Title
Visual prosthesis and method of using same
Application Number
9/41933
Publication Number
5935155
Application Date
March 13, 1998
Publication Date
August 10, 1999
Inventor
Robert J Greenberg
Los Angeles
CA, US
Eugene de Juan Jr
Phoenix
MD, US
Mark S Humayun
Baltimore
MD, US
Agent
Leydig Voit & Mayer
Assignee
John Hopkins University School of Medicine
MD, US
IPC
A61F 2/16
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