Green light therapy (IMAGE) University of Arizona Health Sciences Caption University of Arizona Health Sciences researchers are studying green light therapy with a goal to reduce opioid dependency in postsurgical patients. Credit UArizona Health Sciences Usage Restrictions Credit UArizona Health Sciences License Original 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.