Josh Silver, a former professor of physics at Oxford University, has come up with a game-changer of a product design with his water-lensed glasses.
"The wearer adjusts a dial on the syringe to add or reduce amount of fluid in the membrane, thus changing the power of the lens. When the wearer is happy with the strength of each lens the membrane is sealed by twisting a small screw, and the syringes removed. The principle is so simple, the team has discovered, that with very little guidance people are perfectly capable of creating glasses to their own prescription."
"The target, within a few years, is 100 million pairs annually"
via the Guardian