• Clinical diagnosis of GA of the macula secondary to AMD

• GA lesions between 2.5 and 12.5 mm2 at screening

• Sufficiently clear ocular media, adequate pupillary dilation and fixation to permit quality fundus imaging in the study eye as described in the protocol

• Willing and able to comply with clinic visits and study-related procedures, including completion of the full series of meningococcal vaccinations and pneumococcal vaccination required per protocol