ECVD-20 visual ergonomics: A novel tool for evaluating environmental conditions based on visual ergonomics for...

Area of Science:

• Occupational Health
• Ergonomics
• Human-Computer Interaction

Background:

• Display use in workplaces presents significant psychophysical challenges.
• There is a need for reliable tools to assess visual ergonomics.
• Existing assessment methods may not adequately address modern display-based work environments.

Purpose of the Study:

• To develop and validate a novel tool, the Evaluating Environmental Conditions Based on Visual Ergonomics (ECVD-20).
• To provide a reliable method for evaluating visual ergonomic conditions in display-based work environments.

Main Methods:

• A semi-systematic literature review and expert consultation were used for tool development.
• Exploratory factor analysis (EFA) assessed structural validity.
• The ECVD-20 was applied by trained experts in 236 workplaces, with reliability and validity analyses conducted.

Main Results:

• The ECVD-20 showed strong validity (CVR=0.865, CVI=0.946) and acceptable internal consistency (Cronbach's α=0.644).
• EFA identified a four-factor structure (luminance, lighting, work tools, postures) explaining 55.58% of variance.
• A cutoff score of 31.01 was established via ROC analysis for action classification.

Conclusions:

• The ECVD-20 is a valid and reliable tool for assessing visual ergonomics in various settings.
• The tool can guide interventions to enhance workplace health and productivity.
• It offers a practical approach to managing visual ergonomic risks in display-based work environments.