Some eye care professionals say all that screen time has led to an increase in what they call computer vision syndrome.

VOA: special.2011.08.01

Similarly missing, technology that was going to scroll text automatically by tracking your eye movements down the screen.

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Advocates for the technology argue that having a screen within eye's reach could actually improve manners in the digital age.

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Above and to the right of the wearer's right eye is a small screen that can display Google search results, e-mails, reminders and other information.

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