Nightly News | January 25, 2013
>>> those watching any of secretary hillary clinton 's testimony this week noticed, she's been wearing glasses, which, of course, she has from time to time all her life. but when photographers peered in even closer, they noticed a sectional fresnell lens over her left eye. they are used to prevent double vision . her spokesman said she'll be wearing them for a while, due to lingering issues from her concussion. as you recall, she took a terrible fall at home while weakened by a stomach virus.