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Effect of Subjective and Objective Workload on Asthenopia at VDU Workplaces

Studeli T., Menozzi M.

International Journal of Occupational Safety and Ergonomics

2003

Vol. 9, No. 4

441--451

An ergophthalmological tool has been developed to investigate effects of subjective and objective workload on work-related visual complaints (asthenopia). In field studies on different visual display unit (VDU) workplaces effects of objective and subjective workload, work intensity, and work breaks (5–9 min/hour) could be found. It could be shown that during the first hours of VDU work, asthenopic complaints have the tendency to follow effective workload. With increasing working time the effect of a general and visual fatigue overlaps other reported visual complaints in the majority of cases.