In this study, three experiments were performed in order to investigate the effect of ornamental foliage plants on visual fatigue caused by visual display terminal operation. Visual fatigue was evaluated as critical flicker fusion frequency (CFF). Four students served as subjects in each experiment.
The experiment (1) was carried out to examine the reduction of visual fatigue by viewing plants during visual display terminal operation. As the results, the CFF of the subjects in case of viewing plants was higher than that in case of viewing no plant. Especially, the difference of the CFF of the subject A was 9.3%.
The experiment (2) was carried out to examine the recovery of visual fatigue by viewing plants after visual display terminal operation. As the results, the CFF of the three subjects except A increased in case of viewing plants and decreased in case of viewing no plant. The differences of the CFF of the subjects B and D were 4.6% and 3.6% respectively.
The experiment (3) was carried out to determine whether difference in kinds of plants could bring about difference of the recovery of visual fatigue. As the results, average of the CFF of the subjects in case of viewing Schefflera arboricola “Hong Kong”, Cupressus macrocarpa “Gold Crest” and no plant decreased by 2.7%, 3.1% and 6.0% respectively, while average of the CFF of the subjects in case of viewing Dracaena fragrans “Massangeana” showed an increase of 0.6%.
