Fundus autofluorescence (FAF): (IMAGE) University of Bonn Caption Image of the central retina in a patient with geographic atrophy - serves as a reference for optical coherence tomography (OCT). Credit © Universitäts-Augenklinik Bonn Usage Restrictions This image may be used together with the press release. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.