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Observation distance and blinking rate measurement during on-site investigation: new electronic equipment
B Piccoli1, M D'Orso, P L Zambelli
1Department of Occupational Health, University of Milan-ICP Hospital, Italy. workvis@mailserver.unimi.it
Ergonomics
|May 25, 2001
Abstract:
Modern work activities often require an intense and prolonged visual effort on near objects. At the same time, occupational asthenopia caused by accommodation and binocularity overloading is a very common complaint in these working populations. Moreover, blinking rate seems to be a sensitive parameter with 'indoor-near-work operators', possibly increased by both chemical and physical environmental agents and decreased by cognitive effort. In this paper, a new piece of electronic equipment used to measure the observation distance and blinking rate is described.