The U.S. government will begin testing a new set of contact lenses that would enable troops on the battlefield to view information superimposed over their regular field of vision. Innovega's iOptik system -- a multifocal set of lenses designed to work with specialized glasses -- allows a wearer to focus on two images at once and would replace the bulky virtual reality helmets currently used by the U.S. military. "By wearing our contact lens you automatically have this multi-focus, or dual-focus, and you are doing something that humans don't usually do," said Innovega chief executive Steve Willey.

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PhysOrg.com, BBC

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