Imagine glasses that could bring everything into focus, shifting prescriptions from near to farsighted and back again in moments. It’s not possible with today’s glass lenses, but a breakthrough in what are called liquid lenses could make smart glasses that do exactly that. They could put an end to bifocals, and you’d only ever need that one pair of adjustable spectacles for the rest of your life.
via IEEE Spectrum
February 27, 2017