dc.creator | FEITOSA-SANTANA, Claudia | |
dc.creator | BIMLER, David L. | |
dc.creator | PARAMEI, Galina V. | |
dc.creator | OIWA, Nestor N. | |
dc.creator | BARBONI, Mirella T. S. | |
dc.creator | COSTA, Marcelo F. | |
dc.creator | SILVEIRA, Luiz C. L. | |
dc.creator | VENTURA, Dora F. | |
dc.date.accessioned | 2012-10-20T14:14:12Z | |
dc.date.accessioned | 2018-07-04T15:53:07Z | |
dc.date.available | 2012-10-20T14:14:12Z | |
dc.date.available | 2018-07-04T15:53:07Z | |
dc.date.created | 2012-10-20T14:14:12Z | |
dc.date.issued | 2010 | |
dc.identifier | OPHTHALMIC AND PHYSIOLOGICAL OPTICS, v.30, n.5, p.724-730, 2010 | |
dc.identifier | 0275-5408 | |
dc.identifier | http://producao.usp.br/handle/BDPI/32102 | |
dc.identifier | 10.1111/j.1475-1313.2010.00764.x | |
dc.identifier | http://dx.doi.org/10.1111/j.1475-1313.2010.00764.x | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1628736 | |
dc.description.abstract | Color vision was examined in subjects with long-term occupational exposure to mercury (Hg) vapor. The color vision impairment was assessed by employing a quantitative measure of distortion of individual and group perceptual color spaces. Hg subjects (n = 18; 42.1 +/- 6.5 years old; exposure time = 10.4 +/- 5.0 years; time away from the exposure source = 6.8 +/- 4.6 years) and controls (n = 18; 46.1 +/- 8.4 years old) were examined using two arrangement tests, D-15 and D-15d, in the traditional way, and also in a triadic procedure. From each subject`s `odd-one-out` choices, matrices of inter-cap subjective dissimilarities were derived and processed by non-metric multidimensional scaling (MDS). D-15d results differed significantly between the Hg-group and the control group (p < 0.05), with the impairment predominantly along the tritan axis. 2D perceptual color spaces, individual and group, were reconstructed, with the dimensions interpreted as the red-green (RG) and the blue-yellow (BY) systems. When color configurations from the Hg-group were compared to those of the controls, they presented more fluctuations along both chromatic dimensions, indicating a statistically significant difference along the BY axis. In conclusion, the present findings confirm that color vision impairments persist in subjects that have received long-term occupational exposure to Hg-vapor although, at the time of testing, they were presenting mean urinary concentration within the normal range for non-exposed individuals. Considering the advantages of the triadic procedure in clinical evaluation of acquired color vision deficiencies, further studies should attempt to verify and/or improve its efficacy. | |
dc.language | eng | |
dc.publisher | WILEY-BLACKWELL | |
dc.relation | Ophthalmic and Physiological Optics | |
dc.rights | Copyright WILEY-BLACKWELL | |
dc.rights | restrictedAccess | |
dc.subject | color space | |
dc.subject | color vision | |
dc.subject | D-15d | |
dc.subject | mercury | |
dc.subject | multidimensional scaling (MDS) | |
dc.subject | neurotoxicity | |
dc.title | Color-space distortions following long-term occupational exposure to mercury vapor | |
dc.type | Artículos de revistas | |