Smartphone Screens Correct for Your Vision Flaws From: Scientific American - 11/18/2014 By: Rachel Nuwer Self-correcting screens on smartphones and iPads tailor themselves to a viewer's vision—no glasses necessary Gordon Wetzstein, an assistant professor of electrical engineering at Stanford University and his colleagues at MIT (where he was formerly based) and the University of California, Berkeley, have developed a vision-correcting displays—screens that wear glasses for you. The display makes two modifications to a standard high-resolution smartphone or tablet screen. The first is a low-cost, pinhole-covered printed transparency that covers the screen. The second: algorithms coded into the smartphone or tablet that determine the viewer's position relative to the screen and distort the image that is projected, according to his or her prescription. As the distorted image passes through the matrix of pinholes in the transparent screen cover, the hardware-software combination creates errors on the screen that cancel errors in the eye, thus delivering what appears to be a crisp image. The screen can correct for myopia, hyperopia, astigmatism, and more complicated vision problems. Read the entire article at: http://www.scientificamerican.com/article/smartphone-screens-correct-for-your-vision-flaws/ Links: Eyeglasses-free Display: Towards Correcting Visual Aberrations with Computational Light Field Displays (with videos 2:28 & 8:21) http://web.media.mit.edu/~gordonw/VisionCorrectingDisplay/ Gordon Wetzstein https://profiles.stanford.edu/gordon-wetzstein http://web.stanford.edu/~gordonwz/