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In a field study an adjustable VDT workstation was given to each of the 68 operators for one week. The preferred settings, the body postures and subjective evaluations were assessed during normal working activities of the operators. The preferred ranges disclose the following figures: keyboard height (home row above floor) 71-87 cm, screen height (centre(More)
A medical examination and questionnaire in various office workplaces (N = 295) shows that in intensive work at visual display terminals rheumatic and asthenopic disorders are very frequent. Muscle pain and eye complaints are correlated. The incidence of eye disorders and visual acuity are related to lighting conditions (local and temporal oscillation of(More)
Four groups of office tasks were studied: Data entry terminals, conversational terminals, traditional office work and typing. Eye impairments are observed in every group of office employees, but the impairments are more frequent in VDU operators. The impairments persist during leisure time. High luminance contrasts between screen and source document are(More)
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