Effect of blue light from LCD on VDT work: Experiment using blue light reduction function LCD. Issue 8 (13th December 2019)

• Record Type: Journal Article
• Authors: Yoshimura, Kumiko; Sakakibara, Hisataka; Ikeda, Mitsuru; Shibata, Kazuhiro; Tamamura, Yoshinori
• Is Part Of: Journal of the Society for Information Display. Volume 28:Issue 8(2020)
• Page Start: 691
• Page End: 697
• Publication Date: 2019-12-13
• Subjects: blue light -- liquid crystal display -- luminance -- visual display terminal -- visual search; Information display systems -- Periodicals; 621.38154205
• DOI: 10.1002/jsid.863
• Languages: English
• ISSNs: 1071-0922

Abstract

Abstract: The aim of this study was to examine the impact of the blue light from the visual display terminal (VDT) on visual search tasks. We assessed the quantity of the blue light from medical imaging diagnoses (medical‐grade) liquid‐crystal display (LCD) and general (personal computer‐grade) LCD for the VDT work, both equipped with the blue light reduction function. Then, we measured the visibility of display by evaluating the correct answer rate and reaction time of visual search tasks. The quantity of the blue light was proportional to the luminance of the display. When the blue light reduction function was used during the VDT work, the blue light at the peak wavelength was reduced by about 56%. Though the luminance of the display reduced, the visibility of the display was not decreased. These findings suggest that the blue light reduction on the LCD could work efficiently in the VDT work, maintaining the visibility of the display. Abstract : This study was to examine the impact of blue light from visual display terminals (VDTs) on visual search tasks. We have assessed two medical‐grade liquid‐crystal displays (LCDs) and a general LCD with the blue light reduction function. These findings suggest that the blue light reduction on LCD could work efficiently in the VDT work, maintaining the visibility of display.