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  • Title: [Asthenopia and objective ophthalmological findings in a population of 2058 VDT operators in Lombardy].
    Author: Piccoli B, Gratton I, Pierini F, Catenacci G, Raimondi E, Farulla A.
    Journal: G Ital Med Lav; 1989 Nov; 11(6):267-71. PubMed ID: 2562747.
    Abstract:
    A large population of 2058 VDT operators from all compartments in Lombardia of a large national company was studied. An "ergophthalmological" questionnaire was administered to all subjects, followed by an ophthalmological-orthoptic examination. Ametropias showed a prevalence of 51.9%; the most common refractive defect was myopia followed by astigmatism and hyperopia. Heterophorias with bad or mediocre compensation had a prevalence of 4.1 and 11% respectively. The study of symptoms showed a frequency of 23.5% of intense asthenopic complaints and 21.1% of less severe and less frequent symptomatology. Asthenopia was significantly correlated (chi square) with sex, VDT exposure, refraction, presbyopia, and decompensated heterophorias.
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