Visual prosthesis microelectrode array capable of generating converged virtual electrodes

The invention discloses a visual prosthesis microelectrode array capable of generating converged virtual electrodes. The visual prosthesis microelectrode array comprises a microelectrode array, a common recovery electrode and a micro-current stimulator, wherein the micro-current stimulator stimulates adjacent ring electrodes in the microelectrode array according to a received external stimulationsignal; the microelectrode array is combined with the far-end common recovery electrode to generate virtual electrodes; the virtual electrodes move in a one-dimensional direction by adjusting the stimulation current proportion of two adjacent ring electrodes; and the virtual electrodes move in a two-dimensional region and converged virtual electrode stimulation is realized by adjusting the stimulation current proportion of four adjacent electrodes. According to the visual prosthesis microelectrode array, stimulation sites of the converged virtual electrodes can be adjusted, so that local virtual electrode stimulation