I. Introduction
RETINITIS pigmentosa (RP) and age-related macular degeneration (AMD) are two of the most prevalent outer retinal diseases for which there are currently no known cures. These diseases primarily affect the photoreceptors, the class of neurons comprising the sensory retina, loss of these cells can ultimately lead to blindness. Despite the death of rods and cones, numerous studies have shown that inner retinal cells remain; however, the functional and structural integrity of these remaining cells remains poorly understood.