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Micro implantable visual prostheses

: Schwarz, M.; Ewe, L.; Hijazi, N.; Hosticka, B.J.; Huppertz, J.; Kolnsberg, S.; Mokwa, W.; Trieu, H.-K.


Dittmar, A. ; IEEE Engineering in Medicine and Biology Society -EMBS-:
1st Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine and Biology 2000. Proceedings
Piscataway, NJ: IEEE, 2000
S.461-465 : Lit.
International Special Topic Conference on Microtechnologies in Medicine and Biology <1, 2000, Lyon>
Fraunhofer IMS ()
CMOS image sensor; biomedical prosthesis; flexible electrostimulator; Bildsensor; CMOS-Sensor; Stimulation; Prothese

Two micro implantable visual prosthesis systems for blind patients will be 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 a 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 a near IR optical link for data transmission from an external image acquisition and telemetry unit to both implantable micro devices.