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Josh Silver demos adjustable liquid-filled eyeglasses


Josh Silver demos adjustable liquid-filled eyeglasses
Josh Silver demos adjustable liquid-filled eyeglasses
Duration: 5:34

Josh Silver delivers his brilliantly simple solution for correcting vision at the lowest cost possible -- adjustable, liquid-filled lenses. At TEDGlobal 2009, he demos his affordable eyeglasses and reveals his global plan to distribute them to a billion people in need by 2020.