Optical Setup (IMAGE) Optica Caption The researchers customized this adaptive optics scanning light ophthalmoscope to improve the imaging resolution by strategically blocking light in various locations of the instrument. Using less light is an advantage for imaging the human eye. Credit Johnny Tam, National Eye Institute 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.