Photo: Daniel Y. Go
Benjamin Franklin invented bifocal eyeglasses in 1784. The technology has yet to be displaced.
For those who strain to see both near and far, bifocals have been the answer for a couple hundred years. Until now.
An optical technology firm out of Virginia has developed eyeglass lenses made of liquid crystals. The crystals vary how they refract light depending on if they are activated by an electric current.
Seem like science fiction? Well, the electronic eyeglasses are set to hit the U.S. market later this year.
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