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Glasses with an adjustable focal length -- sounds so simple, somebody must have already done it, right? Well, yes, but earlier efforts have looked more like diving goggles than something you could, you know, wear in public. The Harry Potter-esque TruFocals, on the other hand, are (only just) accep...

5 years ago 0 Comments
August 11, 2009 at 12:28PM