Dong-Yu Guo1, Yuan-Yuan Shen2, Miao-Miao Zhu1, Yang-Yang Zhan3, Xia-Wei Wang1, Jian-Hua Xia1, Bo Jiang1, Yang-Shun Gu1, Yan Long1. 1. Department of Ophthalmology, First Affiliated Hospital of Zhejiang University, Hangzhou 310000, Zhejiang Province, China. 2. Department of Internal Medicine, Liangzhu Hospital, Yuhang District, Hangzhou 310000, Zhejiang Province, China. 3. Department of Ophthalmology, Shulan Hospital, Hangzhou 310000, Zhejiang Province, China.
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. International Journal of Ophthalmology Press.
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. International Journal of Ophthalmology Press.
Entities:
Keywords:
accommodation; myopia; virtual reality; visual fatigue; visual function
Authors: Yuuki Okada; Kazuhiko Ukai; James S Wolffsohn; Bernard Gilmartin; Atsuhiko Iijima; Takehiko Bando Journal: Vision Res Date: 2005-09-29 Impact factor: 1.886