Colour vision loss in workers exposed to elemental mercury vapour

  • Cavalleri A
  • Belotti L
  • Gobba F
 et al. 
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Abstract

We evaluated colour vision in 33 workers exposed to elemental mercury (Hg) vapour and in 33 referents matched for sex, age, alcohol consumption and cigarette smoking. The results were expressed as colour confusion index (CCI). In the workers urinary excretion of Hg (HgU) ranged from 28 to 287 μg/g creatinine. Subclinical colour vision loss, mainly in the blue-yellow range, was observed in the workers. This effect was related to exposure, as indicated by the correlation between HgU and CCI (r = 0.488, P < 0.01). In the workers whose HgU exceeded 50 μg/g creatinine, mean CCI was significantly increased compared to the matched referents. The results suggest that exposure to elemental Hg inducing HgU values exceeding 50 μg/g creatinine can induce a dose-related colour vision loss. © 1995.

Author-supplied keywords

  • Biological monitoring
  • Colour vision loss
  • Elemental mercury
  • Neurotoxicity
  • Occupational exposure
  • Urinary mercury (HgU)
  • Visual system

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Authors

  • Fabriziomaria GobbaUniversita degli Studi di Modena e Reggio Emilia

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  • Alessandro Cavalleri

  • Luisa Belotti

  • Giorgio Luzzana

  • Paolo Rosa

  • Paolo Seghizzi

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