Healing Sight (IMAGE) Washington University School of Medicine Caption Lawrence Tychsen performs a visual examination of a young patient in his clinic. Credit n/a Usage Restrictions Washington University in St. Louis provides this image for free use by media for purposes of news coverage; all other uses are prohibited. 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.