|Document ID (ISN)||59833|
|ISSN - Serial title
||0300-8134 - Journal of Human Ergology
|Convention or series no.
||Watten R.G., Lie I.
||Time factors in VDT-induced myopia and visual fatigue - An experimental study
||June 1992, Vol.21, No.1, p.13-20. Illus. 41 ref.
||In an experimental design with two matched groups (n=13 and n=17) working for 2h and 4h respectively, followed by a 15min restitution time, the study examined the effect of continuous VDT work on: (1) visual acuity, refraction and oculomotor functions (ZCSV: zone of clear, single vision) and (2) the effect of 15min restitution time on the oculomotor functions (ZCSV). In both groups there was a significant reduction in visual acuity, refraction changes in myopic direction and reduced ciliar and vergence muscle capacity. The ZCSV changes were temporary and a 15min restitution period restored approximately half of the ZCSV changes. There were no significant differences between 2h or 4h of VDT work on any of the variables examined.
||myopia; visual fatigue; visual acuity; visual display terminals; office work; computer terminals
||physical hazards; human experiments
||D - Periodical articles
|Country / State or Province||Norway|
||Lighting, colour and vision
|Broad subject area(s)
||Occupational medicine, epidemiology
||Diseases of the eye and vision damage
Visual display terminals (VDTs)