Retina implant for implantation in sub-retinal area, has stimulation electrodes delivering electrical stimulation signals to cells of retina, where electrodes are divided into two groups that are controlled temporally and successively

摘要

The implant (10) has a set of stimulation electrodes (22), which deliver electrical stimulation signals to cells of a retina in an eye of a patient, to be contacted. Imaging units (18) convert incident light into the stimulation signals, where the electrodes are divided into two groups that are controlled temporally and successively for delivery of the signals. A repetition frequency of each group of electrodes lies between 0.2 Hertz and 6 Hertz.