Visual field losses in workers exposed to mercury vapor

Preliminary Findings on the Effects of Occupational Exposure to Mercury Vapor Below Safety Levels on Visual and Neuropsychological Functions

“…In workers chronically exposed to high levels of Hg vapor for 10 years in average, we found sensitivity reduction at all eccentricities tested-from the fovea to 27°at the peripheral visual field. 9 In the present study, we have found reductions for the Hg-exposed subjects' worst eyes tested with SAP at 9°and 15°of eccentricity, and with SWAP at 3°, 9°, and 15°of eccentricity.…”

“…[5][6][7][8][9][10] Nevertheless, there is no clear knowledge of the level of exposure at which Hg vapor causes adverse effects. Visual impairment has been found in subjects with very low urinary Hg concentration, such as children exposed to inorganic Hg in their living environment 11 and dentists exposed to inorganic Hg because of the manipulation of dental amalgam in their work environment.…”

Aging Effects in Psychophysical Foveal Light Detection Thresholds

“…These normality values should be checked in the patients with doubt central vision diagnosis as age-related macular degeneration [58], multiple sclerosis neuropathy [59], diabetic retinopathy [37], intoxications [20] and for a more controlled study of the early foveal involvement in glaucoma patients [51].…”

“…It was surprising since the perimetry is the main functional test related to the diagnosis of very frequent and important ocular disease, the glaucoma [5][6][7][33][34][35][36] but also in other retina impairment as in the diabetes [37][38][39][40][41], multiple sclerosis [10,[42][43][44], mercury intoxication [20,45], and drug intoxications with hydroxichloroquine [16,[46][47][48][49], vigabatrin [18,50] and others. A possible explanation could be since glaucoma initially shows periphery reductions in visual field the authors were much more interested and focused in study those alterations than the central ones.…”

“…Visual field brightness sensitivity perimetry is used as the main diagnostic tool in glaucoma [4][5][6][7]. Important contributions of the perimetry are related to the understanding functional impairment related to retina damage caused by other eye diseases including aged-related macular degeneration [8], optical neuropathies [9][10][11][12][13] systemic diseases like diabetes [14] or in drug intoxication by hydroxychloroquine [15][16][17], vigabatrin [18], tamoxifen [19] and mercury vapor intoxication [20].…”