A Study to Optimize Subretinal Surgical Delivery and to Evaluate Safety and Activity of Opregen in Participants With Geographic Atrophy Secondary to Age-Related Macular Degeneration (GAlette); Adaptive Optics (AO) Retinal Imaging Substudy in Association With Study GR44251

Retina-Vitreous Associates Medical Group, Beverly Hills, California, United States

Retinal Consultants Medical Group, Sacramento, California, United States

West Coast Retina, San Francisco, California, United States

Retina Vitreous Associates of Florida, St. Petersburg, Florida, United States

The Retina Care Center, Baltimore, Maryland, United States

The Retina Institute, St Louis, Missouri, United States

Sierra Eye Associates, Reno, Nevada, United States

Duke Eye Center, Durham, North Carolina, United States

Cincinnati Eye Institute, Blue Ash, Ohio, United States

Mid Atlantic Retina, Philadelphia, Pennsylvania, United States

Tennessee Retina PC, Nashville, Tennessee, United States

Austin Clinical Research, LLC, Austin, Texas, United States

Retina Consultants of Texas, Bellaire, Texas, United States

Piedmont Eye Center, Lynchburg, Virginia, United States

Spokane Eye Clinical Research;Spokane Eye Surgery Center, Spokane, Washington, United States

Hadassah MC, Jerusalem, Israel

Tel Aviv Sourasky MC, Tel Aviv, Israel