IT MAY LOOK LIKE A weird pair of wraparound sunglasses, but the new Sony Visortron has nothing to do with observing one's surroundings. On the contrary. Two tiny video screens (one in front of each eye) and a miniature videotape player provide the equivalent of a personal movie theater. Sony says a few hours of viewing do no harm to the user's eyes. The company hopes to market the device to airlines. First class, of course.
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