Yet all such images depended upon the person in front of the glass, the spoon, the water, the eye.

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The device, which had two different sized arms, also sported a single rectangle of glass in front of the right eye.

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For a moment I focus on the glass and catch the faint, honest reflection of my eye staring back at me, a lock of gray straggly hair in its way.

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Like Google Glass, the Baidu glasses - reportedly known internally as Baidu Eye - consist of a small LCD screen attached to a slim headset.

BBC: 'China's Google' Baidu is making smart glasses

This kind of test may even find its way in an augmented-reality device like Google Glass by tracking eye movements as an image moves across the field of view, as a recently uncovered patent suggests.

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Their eye muscles adapt, and so should the muscles of people who wear Glass, Peli said.

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Ms Jiricna's eye-popping, blue-lit, glass spiral staircase connects the main hall with a new mezzanine floor.

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Then there is Hangar-7, an eye-popping structure of glass and steel that Mateschitz erected next to the airport in Salzburg, Austria.

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