EyeNetra (IMAGE) Association for Computing Machinery Caption Ramesh co-invented a device to address a serious health problem affecting hundreds of millions of people worldwide: uncorrected refractive errors, which is the second-highest cause of blindness. The device, called EyeNetra, uses mobile light field display on phones as a low-cost technique to measure human refractive error and prescribe eyeglasses. Credit John Werner Photography 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.