The Development of Subretinal Microphotodiodes for Replacement of Degenerated PhotoreceptorsZrenner E.a · Miliczek K.-D.a · Gabel V.P.e · Graf H.G.c · Guenther E.a · Haemmerle H.b · Hoefflinger B.c · Kohler K.a · Nisch W.b · Schubert M.d · Stett A.a,b · Weiss S.b
aUniversity Eye Hospital, Tubingen and bNatural and Medical Science Institute at the University of Tubingen, Reutlingen, Institutes for cMicro-Electronics and dPhysical Electronics, Stuttgart, and eUniversity Eye Hospital, Regensburg, Germany
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There are presently several concepts to restore vision in blind or highly visually handicapped persons by implanting electronic devices into the eye in order to partially restore vision. Here, the approach to replace retinal photoreceptors by a sub-retinally implanted microphotodiode array (MPDA) is summarized. A survey is given on the present state of the development of MPDAs, the possibility of in vitro and in vivo tests as well as first results on biocompatibility and histology. Additionally, electrophysiological recordings in rabbits and rats are presented which have received such subretinal implants.
© 1997 S. Karger AG, Basel
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