Dr. Zrenner is Senior Professor of Ophthalmology at the Institute for Ophthalmic Research at the Centre for Ophthalmology of the University of Tuebingen, Germany. His research interests include: retinal physiology and pathophysiology, neuro-ophthalmology, ophthalmic toxicology, retina implants, electrophysiology and other methods of non-invasive function testing, neurodegeneration, ophthalmogenetics and gene therapy. He coordinates 3 EUProjects. He also is Principal Investigator of several clinical studies and has developed a subretinal active microphotodiode array (MPDAs) to replace degenerated photoreceptors in blind people, so far tested in 29 study patients in an international multicenter trial, including Oxford, London and Hong Kong and others. The new overhauled version Retina Implant Alpha AMS has recently been approved for commercial use as medical device (CEmark).