Retinal degenerative diseases result in a progressive degeneration of photoreceptors in the retina and eventually lead to complete blindness. Among the many approaches tested, electrical stimulation of the remaining retinal neurons has shown the most promising results for vision rehabilitation of the blind. However, to improve the performance of retinal prosthetic systems, the fabrication of a device with a large number of stimulation electrodes is essential. For the successful development of a high-resolution prosthetic device, it is necessary to conduct highly collaborative research on microelectrode arrays and stimulation circuits, as well as verification of this research in animal experiments. In this paper, the requirements for a high-resolution retinal prosthetic system are explained, and then research efforts from around the world including the strategies of our research group to make major breakthroughs in artificial retina research are reviewed in detail.