Computers and vision : simple measures can ease eyestrain

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      <subfield code="a">For as long as people have eyed computer screens, scientists have wondered what the screens do to our eyes. Some scientists speculate that overstraining the eyes day after day triggers permanent medical problems. Others theorize that the very low level of electromagnetic radiation emitted from the screens could somehow interfere with cells. This could ultimately cause cataracts or thickening of the cornea. Still others have a hunch our eyes are simply tired. One night's rest is all we need to reinvigorate them for the next day's work</subfield>
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      <subfield code="g">Vol. 150, nº 1, July 1994 ; p. 40-43</subfield>
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