Tuning with Depth Target (VIDEO) Optica This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption A new OCT system uses an electrically tunable lens to focus the light at different depths to allow imaging of the entire eye. The depth target with bars can be seen coming into and out of focus as the lens focal length is tuned. Credit Karol Karnowski and Ireneusz Grulkowski, Nicolaus Copernicus 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.