A Study to Evaluate Intravitreal JNJ-81201887 (AAVCAGsCD59) Compared to Sham Procedure for the Treatment of Geographic Atrophy (GA) Secondary to Age-related Macular Degeneration (AMD)

Prior treatment

• Any prior thermal laser in the macular region, regardless of indication

Other illness

• History of transpupillary thermotherapy, photodynamic therapy or external-beam radiation therapy in the region of study eye
• History of retinal detachment (with or without repair)

Other

• Active, infectious conjunctivitis, keratitis, scleritis, or endophthalmitis
• Any sign of diabetic retinopathy or central serous chorioretinopathy

• Have non-subfoveal (defined as not involving the center point of the fovea) geographic atrophy (GA) secondary to age-related macular degeneration (AMD) with an area that can be measured and measures 2.5 millimeter square (mm\^2) to 17.5 mm\^2 (1- and 7- disc areas respectively), determined by the central reading center (CRC) from screening images of fundus autofluorescence (FAF) and spectral domain optical coherence tomography (SD-OCT)
• If GA is multifocal, at least one focal lesion must be greater than or equal to (\>=) 1.25 mm\^2 (0.5- disc area), as assessed by the CRC
• GA can be photographed in its entirety by FAF, using a 30- degree image centered on the fovea, as assessed by the CRC
• Fellow eye must be present with a best corrected distance visual acuity (BCVA) of counting fingers or better
• Man or woman (according to their reproductive organs and functions assigned by chromosomal complement)