This undated photo released by Google shows a contact lens Google is testing to explore tear glucose. After years of scalding soldering hair-thin wires to miniaturize electronics, Brian Otis, Google X project lead, has burned his fingertips so often that he can no longer feel the tiny chips he made from scratch in Google\u0092s Silicon Valley headquarters, a small price to pay for what he says is the smallest wireless glucose sensor that has ever been made.

AP Photo

This undated photo released by Google shows a contact lens Google is testing to explore tear glucose. After years of scalding soldering hair-thin wires to miniaturize electronics, Brian Otis, Google X project lead, has burned his fingertips so often that he can no longer feel the tiny chips he made from scratch in Google\u0092s Silicon Valley headquarters, a small price to pay for what he says is the smallest wireless glucose sensor that has ever been made.

Google develops contact lens glucose monitor

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Google unveiled Thursday a contact lens that monitors glucose levels in tears, a potential reprieve for millions of diabetics who have to jab their fingers to draw their own blood as many as 10 times a day.

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