Dry AMD (atrophic macular degeneration) is the most common type of AMD, accounting for around 90% of all cases. The cells of the macula slowly break down, causing vision to become blurred. Dry AMD generally affects both eyes, but vision can be affected more in one eye than the other and it affects central rather than peripheral vision.
Over time, sometimes many years, the disease process can worsen, with more of the macula being affected. This advanced form is called geographic atrophy.