 This is a multicenter when more than one hospital or medical school team work on a medical research study study which includes an initial unmasked safety phase, followed by a randomized study medication assigned to participants by chance, masked treatment efficacy phase for participants who have Geographic Atrophy. The study consists of 2 Phases: Open label safety Run-in Phase followed by double-masked randomized treatment Phase. The duration of participation in the study for each participant is approximately 5 years. Efficacy will be evaluated at 6 months, 12 months and annually thereafter. Participants safety will be monitored throughout the study. 