The effect of Vaccinium uliginosum extract on tablet computer-induced asthenopia: randomized placebo-controlled study

BMC Complementary and Alternative Medicine

Research Article

Chi-Yeon Lim¹  Moo-Yong Rhee²  Namyi Gu³  Jong-Hyun Oh⁴  Minwook Chang⁴  Martha Kim⁴  Choul Yong Park⁵ 

[1] Department of Biostatistics, Dongguk University Ilsan Hospital, Goyang, Gyeonggido, South Korea;Department of Cardiology, Dongguk University, Ilsan Hospital, Goyang, Gyeonggido, South Korea;Department of Clinical Pharmacology and Therapeutics, Dongguk University, Ilsan Hospital, Goyang, Gyeonggido, South Korea;Department of Ophthalmology, Dongguk University, Ilsan Hospital, Goyang, Gyeonggido, South Korea;Department of Ophthalmology, Dongguk University, Ilsan Hospital, Goyang, Gyeonggido, South Korea;Department of Ophthalmology, Dongguk University, Ilsan Hospital, 814, Siksadong, Ilsan-dong-gu, 410-773, Goyang, Kyunggido, South Korea;

关键词: Asthenopia;    Antioxidant;    Computer vision syndrome;    Billberry;    Vaccinium;   

DOI  :  10.1186/s12906-016-1283-x

 received in 2015-12-31, accepted in 2016-08-12,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundTo investigate the alleviation effect of Vaccinium uliginosum extract (DA9301) on tablet computer-induced asthenopia.MethodsThis was a randomized, placebo-controlled, double-blind and parallel study (Trial registration number: 2013–95). A total 60 volunteers were randomized into DA9301 (n = 30) and control (n = 30) groups. The DA9301 group received DA9301 oral pill (1000 mg/day) for 4 weeks and the control group received placebo. Asthenopia was evaluated by administering a questionnaire containing 10 questions (responses were scored on a scales of 0–6; total score: 60) regarding ocular symptoms before (baseline) and 4 weeks after receiving pills (DA9301 or placebo). The participants completed the questionnaire before and after tablet computer (iPad Air, Apple Inc.) watching at each visit. The change in total asthenopia score (TAS) was calculated and compared between the groupsResultsTAS increased significantly after tablet computer watching at baseline in DA9301 group. (from 20.35 to 23.88; p = 0.031) However, after receiving DA9301 for 4 weeks, TAS remained stable after tablet computer watching. In the control group, TAS changes induced by tablet computer watching were not significant both at baseline and at 4 weeks after receiving placebo. Further analysis revealed the scores for “tired eyes” (p = 0.001), “sore/aching eyes” (p = 0.038), “irritated eyes” (p = 0.010), “watery eyes” (p = 0.005), “dry eyes” (p = 0.003), “eye strain” (p = 0.006), “blurred vision” (p = 0.034), and “visual discomfort” (p = 0.018) significantly improved in the DA9301 group.ConclusionsWe found that oral intake of DA9301 (1000 mg/day for 4 weeks) was effective in alleviating asthenopia symptoms induced by tablet computer watching.Trial registrationThe study is registered at www.clinicaltrials.gov (registration number: NCT02641470, date of registration December 30, 2015).

【 授权许可】

CC BY   
© The Author(s). 2016