Dry AMD, or “central geographic atrophy,” is the “dry” form of advanced Age-Related Macular Degeneration. Dry AMD occurs when the light-sensitive cells (photoreceptors) in the macula slowly break down, gradually blurring central vision in the affected eye. Over time, as less of the macula functions, central vision is gradually lost in the affected eye, often progressing to blindness. The loss of photoreceptors is a direct result of a preceding degeneration of the RPE layer of cells just below the retina. Dry AMD is much more common than wet AMD, which results from aberrant blood vessel formation in the eye. Some 85-90 percent of all people with intermediate and advanced AMD combined suffer from the dry form. Despite representing a $25-30 Billion market opportunity, there are currently no FDA-approved treatments for Dry AMD available.