Disclosed is a system and method for treatment of cells and, in particular,visual pathway disorders. More particularly, the disclosed invention isdirected toward the photomodulation and/or photorejuvenation of retinalepithelial cells, to treat a variety of vision disorders. The process oftreating retinal cells to reduce or reverse the effects of visual pathwaydisorders employs a narrowband source of multichromatic light applied to theretinal cells to deliver a very low energy fluence.