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Normal and Defective Colour Vision$
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John D. Mollon, Joel Pokorny, and Ken Knoblauch

Print publication date: 2003

Print ISBN-13: 9780198525301

Published to Oxford Scholarship Online: April 2010

DOI: 10.1093/acprof:oso/9780198525301.001.0001

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Visual Dysfunction Following Mercury Exposure By Breathing Mercury Vapour Or By Eating Mercury-Contaminated Food

Visual Dysfunction Following Mercury Exposure By Breathing Mercury Vapour Or By Eating Mercury-Contaminated Food

Chapter:
(p.409) Chapter 44 Visual Dysfunction Following Mercury Exposure By Breathing Mercury Vapour Or By Eating Mercury-Contaminated Food
Source:
Normal and Defective Colour Vision
Author(s):

Luiz Carlos L. Silveira

Enira Terezinha B. Damin

Maria Da ConceiÇÃO N. Pinheiro

Anderson R. Rodrigues

Ana Laura A. Moura

Maria Izabel T. CÔRtes

Guilherme A. Mello

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198525301.003.0044

This chapter examines the visual performance of Amazonian gold miners and other workers suffering from mercury poisoning. Subjects exposed to mercury displayed a variable degree of spatial vision dysfunction. Both achromatic and chromatic vision were impaired. They had lower achromatic contrast sensitivity and this effect was more pronounced in the medium spatial frequency range. Mercury exposed subjects also had lower red-green and blue-green chromatic contrast sensitivity than control subjects in all tested spatial frequencies.

Keywords:   colour vision, visual dysfunction, mercury contamination, mercury poisoning, gold miners

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