Light Device Is Effective Ulcer Treatment (image) University of Manchester Share Print E-Mail Caption The lamp built by the team has 32 different bulbs which emit infrared, red or ultraviolet light. Eight patients with 14 ulcers between them had the treatment. Credit Michael Hughes Usage Restrictions None Share Print E-Mail 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.