Citation:Guo DY,Shen YY,Zhu MM,Zhan YY,Wang XW,Xia JH,Jiang B,Gu YS,Long Y.Virtual reality training improves accommodative facility and accommodative range.Int J Ophthalmol 2022;15(7):1116-1121,doi:10.18240/ijo.2022.07.11
Virtual reality training improves accommodative facility and accommodative range
Received:March 07, 2021  Revised:April 13, 2022
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DOI:10.18240/ijo.2022.07.11
Key Words:virtual reality  visual function  myopia  visual fatigue  accommodation
Fund Project:Supported by the National Natural Science Foundation of China (No.81800868); the Health and Family Planning Commission of Zhejiang Province, China (No.2018KY057); the Natural Science Foundation of Zhejiang Province (No.LY19H120007).
                          
AuthorInstitution
Dong-Yu Guo Department of Ophthalmology, First Affiliated Hospital of Zhejiang University, Hangzhou , Zhejiang Province, China
Yuan-Yuan Shen Department of Internal Medicine, Liangzhu Hospital, Yuhang District, Hangzhou , Zhejiang Province, China
Miao-Miao Zhu Department of Ophthalmology, First Affiliated Hospital of Zhejiang University, Hangzhou , Zhejiang Province, China
Yang-Yang Zhan Department of Ophthalmology, Shulan Hospital, Hangzhou , Zhejiang Province, China
Xia-Wei Wang Department of Ophthalmology, First Affiliated Hospital of Zhejiang University, Hangzhou , Zhejiang Province, China
Jian-Hua Xia Department of Ophthalmology, First Affiliated Hospital of Zhejiang University, Hangzhou , Zhejiang Province, China
Bo Jiang Department of Ophthalmology, First Affiliated Hospital of Zhejiang University, Hangzhou , Zhejiang Province, China
Yang-Shun Gu Department of Ophthalmology, First Affiliated Hospital of Zhejiang University, Hangzhou , Zhejiang Province, China
Yan Long Department of Ophthalmology, First Affiliated Hospital of Zhejiang University, Hangzhou , Zhejiang Province, China
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Abstract:
      AIM: To evaluate the effects of virtual reality (VR) training on different parameters of vision.

    METHODS: Sixty individuals ranged 18-60 years old with asthenopia were randomly divided into short-term (n=40) and long-term (n=20) treatment groups. They were given a specially designed VR training device only once for 15min or 3-4 times a day for 15min each time for 1mo. The visual acuity, spherical equivalent, accommodative range, accommodative facility, pupil size, and visual fatigue were evaluated before (control) and after VR training.

    RESULTS: The visual acuity, accommodative range, and accommodative facility increased in subjects of the short-term treatment group, whereas their pupil size contracted significantly. No significant changes in spherical equivalent and visual fatigue were observed. The changes in distant vision and corrected visual acuity were positively correlated with those in pupil size, but not with spherical equivalent. The accommodative range and accommodative facility improved significantly in subjects of the long-term treatment group. No significant changes in visual acuity, spherical equivalent, pupil size, and visual fatigue were noted.

    CONCLUSION: VR training can improve the accommodative range and accommodative facility of human eyes. Although short-term VR training can transiently improve vision, which probably due to bright light adaptation, there is no evidence that it can improve myopia.

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