Dr. Josh Silver, professor of physics at Oxford University designed a pair of spectacles where the optical power can be tuned individually by the wearer, eliminating the need for the optician and the whole process of lens grinding. He hopes to bring 20/20 vision to 1 million people in India next year, and has a bigger goal to offer perfect vision to 1 billion of the worlds poorest by the year 2020.
His presentation on the topic and results of their initial study can be found at the Affordable Vision Correction conference web site. It appears that there were a variety of potential solutions presented there, Josh Silver’s brilliant solution being one of them.