Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA. 1] Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA [2] Ocular Imaging Research and Reading Centre, Stanley M. Truhlsen Eye Institute, University of Nebraska Medical Centre, Omaha, NE, USA. Ocular Imaging Research and Reading Centre, Stanley M. Truhlsen Eye Institute, University of Nebraska Medical Centre, Omaha, NE, USA.