Visual and lighting conditions for VDU workers

This study encompassed VDU operators divided into two intervention groups and one control group. The intervention groups got a new, better lighting system while the control group kept on with the initial, unsatisfactory lighting. The improved lighting gave significantly increased illuminance levels, increased luminances of the room surfaces and better luminance distribution. The two groups reported after the intervention, significant improvement of the lighting and visual conditons and significantly redused visual discomfort and glare. The control group reported no such improvements. However, after three years, also the control group got the lighting intervention and reported then significant improvement of the lighting and viusal conditions.