Purdue University Eye Drainage Device (IMAGE) Purdue University Caption The Purdue University glaucoma drainage device is built with microactuators that vibrate when a magnetic field is introduced. Credit Hyowon Lee/Purdue University 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.