CCM Retina (IMAGE) Uppsala University Caption Veins (V) and arteries (A) in the retina. On the left a healthy retina is shown and on the right the same tissue from an individual with cavernoma. Credit Fabrizio Orsenigo Usage Restrictions This image may only be used when reporting about Fabrizio Orsenigo's research. 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.