Tuesday, April 04, 2006

Smart glasses switch focus in an instant

'Glasses that change from "long distance" to "reading" mode at the flick of a switch could prove a revelation for many wearers. Researchers have developed a prototype that uses liquid crystals to change focus in an instant, thus preventing the eye strain induced by wearing conventional bifocal glasses. Focusing through specific portions of a bifocal lens causes many users to become dizzy or disoriented, while others report increased eye fatigue...' More


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