For many farsighted people, having different pairs of glasses for different viewing distances has been the norm. But with new technology, one pair of glasses could do the trick. Adaptive liquid ...

If you had to choose, would you rather see things up close or far away? People with cataracts used to have to make that decision. With cataract surgery, doctors remove the cloudy lens and replace it ...

Having to wear reading glasses as you get older may soon be a thing of the past. Helen Gleeson describes her team’s research into liquid-crystal contact lenses that will be able to switch focus and ...

Physicists in the US have created a new type of tuneable liquid-crystal lens, whose focus can be changed by varying the voltage applied to it. The new device is better than traditional liquid-crystal ...

If you’re cursed with bifocals or fear they’re in your future, you’ll be glad to know optical scientists at the University of Arizona have been working on liquid-crystal eyeglass lenses that can ...