Visual fatigue during control room work in process industries.
Susanne Glimne, Rune Brautaset, Cecilia Österman
PMID 32310219WHAT IT FOUND
Operators rated tired eyes and blurred vision higher than double vision or sore eyes.
Mental workload was the highest strain. Screens were brighter than the surrounding light in eight of nine control rooms.
Key findings
01Operators rated tired eyes and blurred vision higher than double vision or sore eyes.
02Mental workload was the highest-rated workload aspect and was rated higher than perceived performance.
03In eight of nine control rooms, screens were brighter than the general light condition.
STILL TO COME
How it was doneWhat they foundWhat it means for OTs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
Only 18 operators in nine control rooms were studied, so the results describe a small occupational group and may not apply to other workplaces or clinical patients. The study observed existing conditions and self-reported symptoms without assigning people to different lighting or screen setups, so it cannot show that changing the environment would reduce visual fatigue or neck or shoulder pain. Eye symptoms, visual experience and workload were subjective, and operators accustomed to dim control rooms may have answered differently from people expecting brighter workplaces. The material was too limited to draw statistical conclusions about age and eye symptoms, and a full vision examination was not performed. One extreme workload outlier was excluded from the analysis.
The easy way to misread this
Do not conclude that changing lighting or screen layout will reduce visual fatigue or neck pain. This was a small observational study with no comparison group and no intervention, and the authors state the material was too limited to draw statistical conclusions about age and eye symptoms.