Okayama University-type retinal prosthesis (OUReP) is a new type of retinal prosthesis, so called photoelectric dye-coupled thin film retinal prosthesis. Stable photoelectric dye molecules with absorption spectrum of visible light are chemically coupled to polyethylene film surface. The dye-coupled film generates electric potential in response to light and stimulates nearby neuronal cells to induce action potential. The dye-coupled film, implanted in subretinal space of the eye, serves as a light receiver and an electric potential generator, and thus, replaces the function of dead photoreceptor cells in retinal dystrophy to send the signal to the brain.