Micro implantable visual prostheses

Two micro implantable visual prosthesis systems for blind patients are described. The first system is a retina implant which is based on an implantable microelectrostimulator applicable for patients suffering from retinitis pigmentosa or macula degeneration, and has been already successfully tested in animal experiments. The second system is an intraocular vision aid based on an implantable intraocular optoelectronic display encapsulated into an silicone diaphragm which is applicable for patients suffering from bilateral corneal opacification but with intact posterior ocular segment. Both systems employ wireless power and data transmission using an 13 MHz RF-link for power transmission and either ASK modulation of the RF-carrier or an near IR optical link for data transmission from an external image acquisition and telemetry unit to both implantable micro devices.