Laser Light Therapy (IMAGE) University at Buffalo Caption At a high power, light, often in the form of a laser, is used in medicine to cut or destroy tissue. But at a low level, it has the ability to relieve pain and promote healing. Credit Douglas Levere, University at Buffalo 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.