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 ...

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’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 ...