Analysis of real-world visual ergonomics at the visual display unit

Area of Science:

• Ergonomics
• Human-Computer Interaction
• Occupational Health

Background:

• Workplace ergonomic setups significantly influence employee productivity and comfort.
• Computer Vision Syndrome (CVS) is a growing concern in office environments.
• Adherence to display standards is crucial for optimal visual performance.

Purpose of the Study:

• To evaluate the impact of ergonomic workplace setup and character size on productivity and CVS.
• To assess compliance with international and national standards for display character size.
• To investigate the relationship between character size, productivity, and CVS symptoms.

Main Methods:

• An interventional study involving 152 computer workstations.
• Evaluation of display unit characteristics, including size, resolution, and position.
• Assessment of Computer Vision Syndrome using a questionnaire and character size measurement against ISO 9241-303:2011 standards.

Main Results:

• The average habitually used character size (14.29 angular minutes) was significantly smaller than recommended standards (p < 0.001).
• Increasing character size to 22 angular minutes resulted in a 26% decrease in subjectively rated productivity (p < 0.001).
• No significant correlation was found between character size and Computer Vision Syndrome symptoms.

Conclusions:

• Workplaces often do not adhere to recommended character size standards.
• Non-compliance with character size recommendations can lead to reduced productivity.
• Adjusting character size for ergonomic compliance may not align with all work requirements, such as data overview.