Retina Implant Pilot Trial to Evaluate Safety & Efficacy in Blind Patients Having Degenerated Photo-receptors

Inclusion Criteria: * Hereditary retinal degeneration of the outer retinal layers with the retinal vessels still being perfused and pigments of mild to moderate density * Blindness (at least monocular) or visual functions not appropriate for navigation/orientation * Period of appropriate visual functions \> 12 years / lifetime * Visual acuity ≥ 0,05 in earlier life * Electrically Evoked Phosphenes provide evidence of inner-retinal function. * willing and able to give written informed consent Exclusion Criteria: * Any other ophthalmologic disease with relevant effect upon visual function (e.g. glaucoma, optic neuropathy, trauma, diabetic retinopathy, retinal detachment) * Systemic disease that might imply considerable risk with regard to the surgical intervention and anesthesia (e.g. cardiovascular diseases, severe metabolic diseases) * Neurological and/or psychiatric diseases (e.g. M. Parkinson, epilepsy, depression ) * Retina detected as too thin (\< 100 µm) to expect required rest-functionality as shown via Optical Coherence Tomography (OCT). * Women who are pregnant or nursing, or women of childbearing potential who are not willing to use a medically acceptable means of birth control for the duration of the study, or women unwilling to perform a pregnancy test before entering the study * Participation in another clinical trial within the past 30 days