REUTLINGEN, Germany--(BUSINESS WIRE)--Retina Implant AG, the leading developer of subretinal implants for retinitis pigmentosa patients, today announced that its scientific advisory board is in full support of beginning the multi-center phase of the Company’s second human clinical trial. The trial, which began in Tuebingen, Germany in 2010, will be expanded across Europe in five new sites, including two additional locations in Germany, Oxford, London and Budapest. Unlike the first human clinical trial, patients are able to keep the implant permanently and use the microchip in real-life settings.