Microscopic Image of the Retina (IMAGE) Children's Hospital Los Angeles Caption This is a microscopic image of the retina; the top layer is comprised of cone cells. Credit David Cobrinik, M.D., Ph.D. Usage Restrictions None 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.