The effects of reflected glare and visual field lighting on computer vision syndrome

Clinical & Experimental Optometry : Journal of the Australian Optometrical Association
Chao-Wen LinChang-Hao Yang

Abstract

Computer vision syndrome is common and affects performance of visual tasks. Background illumination, light source, light compensation, position of the display, contrast and glare are environmental factors associated with computer vision syndrome. The aim of this study is to investigate the effects of reflected glare and visual field lighting on computer vision syndrome. In a reflected glare experiment, participants performed a two-hour visual task using a glossy, matte, or glare-free surface display in two visual environments (normal, glare). In a visual field lighting experiment, participants performed the visual task in dim lighting, uneven supplementary lighting, or uniform supplementary lighting. Visual function parameters, including critical fusion frequency, heterophoria, amplitude of accommodation and accommodative facility were evaluated by the investigators and a visual fatigue questionnaire was completed before and after the visual task. Visual performance was also recorded. In addition, the variation of pupil size under different lighting conditions was analysed. Critical fusion frequency was the only visual function parameter which decreased significantly after the visual task. The questionnaire score was significan...Continue Reading

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Citations

Nov 13, 2020·Asia-Pacific Journal of Ophthalmology·Divy Mehra, Anat Galor
Sep 13, 2021·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Caridad Galindo-RomeroFrancisco J Valiente-Soriano

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