Abstract: The invention is directed to a method of making an implantable insulated electrical circuit that utilizes polyparaxylylene, preferably as Parylene, a known polymer that has excellent living tissue implant characteristics, to provide for chronic implantation of conductive electrical devices, such as stimulators and sensors. The device is thin, flexible, electrically insulated, and stable after long exposure to living tissue. Layers of Parylene may be combined with layers of a polymer, such as polyimide, to yield greater design flexibility in the circuit. Multiple electrical conduction layers may be stacked in the circuit to increase packing density.

Abstract: The objective of the current invention is to restore color vision, in whole or in part, by electrically stimulating undamaged retinal cells, which remain in patients with, lost or degraded visual function. The invention is a retinal color prosthesis. Functionally, There are three main parts to this invention. One is external to the eye. The second part is internal to the eye. The third part is means for communication between those two parts. The external part has subsystems. These include an external imaging means, an eye-tracker, a head-motion tracker, a data processor, a patient's controller, a physician's local controller, a physician's remote controller, and a telemetry means. The imaging means may include a CCD or CMOS video camera. It gathers an image of what the eyes would be seeing if they were functional. Color information is acquired by the imaging means. The color data is processed in the video data processing unit.