Work with magnifying glasses

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      <subfield code="c">Helmut Krueger, Peter Conrady and Jörn Zülch</subfield>
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      <subfield code="a">At workplaces with optical aids workers complain more often from visual and musculo-skeletal disorders compared to those working in offices. These complaints concern more often workers using magnifying glasses than those using stereo-microscopes. Bad working-postures at worplaces with loupes and the worse optical quality of todays loupes are two causes. The results of this study suggest use of eye-glasses for near-vision in addition to loupes</subfield>
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      <subfield code="t">Ergonomics</subfield>
      <subfield code="d">London and Washington</subfield>
      <subfield code="g">Vol. 32, nº 7, July 1989 ; p. 785-794</subfield>
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