Safety and Tolerability Study of RO7171009 in Participants With Geographic Atrophy (GA) Secondary to Age-Related Macular Degeneration (AMD)

Inclusion Criteria: * Participants aged greater than or equal to (\>/=) 50 years * Well demarcated area(s) of GA secondary to AMD with no evidence of prior or active choroidal neovascularization (CNV) in study eye Exclusion Criteria: Ocular Exclusion Criteria, Study Eye: * History of vitrectomy surgery, submacular surgery, or other surgical intervention for AMD * Previous laser photocoagulation for CNV, diabetic macular edema, retinal vein occlusion, or proliferative diabetic retinopathy * Prior treatment with Visudyne®, external beam radiation therapy (for intraocular conditions), or transpupillary thermotherapy Ocular Exclusion Criteria (Both Eyes): * GA in either eye due to causes other than AMD * Evidence of prior or active CNV * Previous participation in interventional clinical trials for GA or dry AMD, except for vitamins and minerals, irrespective of the route of administration (i.e., ocular or systemic) within the last 6 months