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+--- Thread: [BBC] Hi-tech glasses offer alternative to bifocals (/Thread-BBC-Hi-tech-glasses-offer-alternative-to-bifocals)
[BBC] Hi-tech glasses offer alternative to bifocals - Discover - 2018-10-25
Hi-tech glasses offer alternative to bifocals
The regular prescription lenses can change to bifocals and back again at the touch of a button.
https://www.bbc.co.uk/news/technology-45908565