Health experts have shown concern over eye strain and fatigue from excessive smartphone and tablet usage, but researchers hope to use mobile devices as a way to help correct vision flaws. Stanford University, MIT and Cal researchers have created a new vision-correcting display that turn regular smartphone or tablet screens into devices that can help fix astigmatisms and other vision problems.
A pinhole-covered printed transparency covers the screen and a custom algorithm is able to fix on viewer position, with projected image distortions altering reading angles. When the image filters through the pinhole, the screen can is able to project an image specific to a user's prescription - and initial testing indicates the solution is effective. Designers hope to provide a slider able to adjust screen focus, but it's unknown when the slider will be implemented.
"As we get older, refractive errors play more significant roles in our lives," said Gordon Wetzstein, Stanford University assistant professor of electrical engineering.