Thickness of the outer nuclear layer (IMAGE) University of Bonn Caption (ONL) derived from OCT data: The photoreceptors are significantly diluted even outside the area of geographic atrophy. 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.