Electrophysiological evidence for impairment of contrast sensitivity in mercury vapor occupational intoxication (2008)
- Authors:
- USP affiliated authors: COSTA, MARCELO FERNANDES DA - IP ; VENTURA, DORA SELMA FIX - IP ; SOUZA, JOHN MANUEL DE - IP
- Unidade: IP
- DOI: 10.1016/j.envres.2007.10.007
- Subjects: MERCÚRIO (ELEMENTO QUÍMICO); CONTRASTE; EXPOSIÇÃO OCUPACIONAL
- Language: Inglês
- Abstract: Contrast sensitivity (CS) was evaluated in 41 former workers from a lamp manufacturing plant who were on disability retirement due to exposure to mercury and 14 age-matched controls. The CS was measured monocularly using the sweep visual evoked potential (sVEP) paradigm at 6 spatial frequencies (0.2, 0.8, 2.0, 4.0, 15.0, and 30 cpd). Statistical difference (p<0.05) was found between the controls and the patient right and left eyes for 2.0 and 4.0 cpd. According the results in those spatial frequencies the eyes were classified in best and worst. Statistical differences were found between the controls and the best eyes for 2.0 and 4.0 cpd and for 0.8, 2.0, and 4.0 cpd for their worst eyes. No correlation was found between CS results and the time of exposure (mean=8.9 yr±4.1), time away from the mercury source (mean=6.0 yr±3.9), urinary mercury level at the time of work (mean=40.6 µg/g±36.3) or with the mercury level at the CS measurement time (mean=1.6 µg/g±1.1). We show the first evidence of a permanent impairment in CS measured objectively with the sVEP. Our data complement the previous psychophysical works reporting a diffuse impairment in the CS function showing a CS reduction in the low to middle spatial frequencies. In conclusion, non-reversible CS impairment was found in occupational exposure to mercury vapor. We suggest that CS measurement should be included in studies of the mercury effects of occupational exposure
- Imprenta:
- Publisher place: Chicago, USA
- Date published: 2008
- Source:
- Título: Environmental Research
- Volume/Número/Paginação/Ano: v. 107, p. 132-138, 2008
- Este periódico é de acesso aberto
- Este artigo NÃO é de acesso aberto
-
ABNT
COSTA, Marcelo Fernandes da et al. Electrophysiological evidence for impairment of contrast sensitivity in mercury vapor occupational intoxication. Environmental Research, v. 107, p. 132-138, 2008Tradução . . Disponível em: https://doi.org/10.1016/j.envres.2007.10.007. Acesso em: 12 fev. 2026. -
APA
Costa, M. F. da, Tomaz, S., Souza, J. M. de, Silveira, L. C. de L., & Ventura, D. S. F. (2008). Electrophysiological evidence for impairment of contrast sensitivity in mercury vapor occupational intoxication. Environmental Research, 107, 132-138. doi:10.1016/j.envres.2007.10.007 -
NLM
Costa MF da, Tomaz S, Souza JM de, Silveira LC de L, Ventura DSF. Electrophysiological evidence for impairment of contrast sensitivity in mercury vapor occupational intoxication [Internet]. Environmental Research. 2008 ; 107 132-138.[citado 2026 fev. 12 ] Available from: https://doi.org/10.1016/j.envres.2007.10.007 -
Vancouver
Costa MF da, Tomaz S, Souza JM de, Silveira LC de L, Ventura DSF. Electrophysiological evidence for impairment of contrast sensitivity in mercury vapor occupational intoxication [Internet]. Environmental Research. 2008 ; 107 132-138.[citado 2026 fev. 12 ] Available from: https://doi.org/10.1016/j.envres.2007.10.007 - Assessment of andapted version of the Cambridge Colour Test and preliminary study of colour vision in infants and children
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Informações sobre o DOI: 10.1016/j.envres.2007.10.007 (Fonte: oaDOI API)
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