Visual Fatigue Induced by Viewing a Tablet Computer with a High-resolution Display
김동주, 임지연, 구남이, 박철용,
소속 상세정보
김동주 ( Kim Dong-Ju )
Dongguk University Ilsan Hospital Department of Ophthalmology
임지연 ( Lim Chi-Yeon )
Dongguk University Ilsan Hospital Department of Biostatistics
구남이 ( Gu Nam-Yi )
Dongguk University Ilsan Hospital Department of Clinical Pharmacology and Therapeutics
박철용 ( Park Choul-Yong )
Dongguk University Ilsan Hospital Department of Ophthalmology
Abstract
Purpose: In the present study, the visual discomfort induced by smart mobile devices was assessed in normal and healthy adults.
Methods: Fifty-nine volunteers (age, 38.16 ± 10.23 years; male : female = 19 : 40) were exposed to tablet computer screen stimuli (iPad Air, Apple Inc.) for 1 hour. Participants watched a movie or played a computer game on the tablet computer. Visual fatigue and discomfort were assessed using an asthenopia questionnaire, tear film break-up time, and total ocular wavefront aberration before and after viewing smart mobile devices.
Results: Based on the questionnaire, viewing smart mobile devices for 1 hour significantly increased mean total asthenopia score from 19.59 ± 8.58 to 22.68 ± 9.39 (p < 0.001). Specifically, the scores for five items (tired eyes, sore/aching eyes, irritated eyes, watery eyes, and hot/burning eye) were significantly increased by viewing smart mobile devices. Tear film break-up time significantly decreased from 5.09 ± 1.52 seconds to 4.63 ± 1.34 seconds (p = 0.003). However, total ocular wavefront aberration was unchanged.
Conclusions: Visual fatigue and discomfort were significantly induced by viewing smart mobile devices, even though the devices were equipped with state-of-the-art display technology.
키워드
Asthenopia; Dry eye syndrome; iPad; Smart mobile device
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