A model for evaluating visual fatigue under LED light sources based on long-term visual display terminal work.

Using data derived from eight hours work at a visual display terminal, a model for evaluating visual fatigue under LED light sources has been developed based on five ophthalmological parameters and three physiological signals. A simplified model based on one ophthalmological parameter and one physiological signal is also proposed. Both models show a high correlation with subjective data and are confirmed by a validation experiment. The results also show that the visual fatigue occurring after eight hours of visual display terminal work under LED lighting is rather small. [ABSTRACT FROM AUTHOR]