Instituto de Ciências Biológicas, Universidade Federal do Pará, 66075-110 Belém, PA, Brazil.
J Environ Public Health. 2012;2012:784390. doi: 10.1155/2012/784390. Epub 2011 Dec 15.
The purpose of this paper was to evaluate achromatic and chromatic vision of workers chronically exposed to organic solvents through psychophysical methods. Thirty-one gas station workers (31.5 ± 8.4 years old) were evaluated. Psychophysical tests were achromatic tests (Snellen chart, spatial and temporal contrast sensitivity, and visual perimetry) and chromatic tests (Ishihara's test, color discrimination ellipses, and Farnsworth-Munsell 100 hue test--FM100). Spatial contrast sensitivities of exposed workers were lower than the control at spatial frequencies of 20 and 30 cpd whilst the temporal contrast sensitivity was preserved. Visual field losses were found in 10-30 degrees of eccentricity in the solvent exposed workers. The exposed workers group had higher error values of FM100 and wider color discrimination ellipses area compared to the controls. Workers occupationally exposed to organic solvents had abnormal visual functions, mainly color vision losses and visual field constriction.
本文旨在通过心理物理学方法评估长期接触有机溶剂的工人的非彩色和彩色视觉。评估了 31 名加油站工人（31.5±8.4 岁）。心理物理学测试包括非彩色测试（Snellen 图表、空间和时间对比敏感度以及视觉视野检查）和彩色测试（石原氏测试、颜色辨别椭圆和 Farnsworth-Munsell 100 色调测试-FM100）。暴露于有机溶剂的工人的空间对比敏感度在 20 和 30 cpd 的空间频率下低于对照组，而时间对比敏感度保持不变。在溶剂暴露工人中，在 10-30 度的偏心处发现视野损失。与对照组相比，暴露组工人的 FM100 错误值更高，颜色辨别椭圆的面积更大。职业接触有机溶剂的工人的视觉功能异常，主要是色觉丧失和视野缩小。
