OCT images (IMAGE) Optica Caption Researchers have shown that a vertical cavity surface emitting laser (VCSEL) diode could offer a less expensive light source for swept-source optical coherence tomography (OCT). Advanced post-processing algorithms (c, d) were used to improve the resulting images. Credit Milana Kendrisic, Medical University of Vienna in Austria Usage Restrictions None 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.