Observation distance and blinking rate measurement during on-site investigation: new electronic equipment.
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.
Piccoli
B
B
Department of Occupational Health, University of Milan-ICP Hospital, Italy. workvis@mailserver.unimi.it
D'Orso
M
M
Zambelli
P L
PL
Troiano
P
P
Assini
R
R
D016902:Air Pollution, Indoor; D001248:Asthenopia; D001767:Blinking / Q000502:physiology*; D016288:Computer Terminals; D004581:Electronics / Q000295:instrumentation*; D006804:Ergonomics; D006801:Humans; D007558:Italy; D016273:Occupational Exposure / Q000032:analysis; D012107:Research Design; D014796:Visual Perception / Q000502:physiology*; D014937:Work / Q000502:physiology*