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The Effects of Chewing Gum in Preventing Eyestrain
Joint Authors
Osawa, Kenji
Ishikawa, Hitoshi
Asakawa, Ken
Kanno, Susumu
Ando, Tomonori
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-16
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Purpose.
To investigate the effects of chewing gum and tablet candy to reduce eyestrain in healthy individuals.
Materials and Methods.
A double-blinded crossover trial was conducted.
Forty-six healthy individuals (23 men, 23 women) between 20 and 59 years old, feeling eyestrain, were enrolled.
Each 10-year age group included 12 individuals except the 30s group, which included 10 individuals.
A visual task was performed on reading material displayed on a computer screen at a fixed distance for 60 min.
Gum or tablet candy of two pieces were chewed for two 15-min periods starting 15 and 45 min after starting to read.
Subjects chewed gum on Day 1 and tablet candy on Day 2, and vice versa.
Primary outcome is as follows: subjective eye fatigue (eye tiredness, eye heaviness, blurred vision, double vision, and eye dryness) using a visual analog scale (VAS).
Secondary outcomes are as follows: subjective accommodation from near and far points of accommodation measured with a D’ACOMO, spherical equivalent refraction, and eye dryness by analyzing ring break-up time (RBUT) measured with the RT-7000 Auto Ref-Topographer.
Results.
The VAS scores of subjective eye fatigue were not significantly changed between chewing gum and tablet candy (P=0.397-P=0.909).
Those scores of eye tiredness and eye heaviness were significantly longer before and after the visual task with tablet candy (P=0.013 and P=0.025, respectively) but not with chewing gum.
The changes of subjective accommodation were significantly lower after the visual task between chewing gum and candy (P=0.043).
There were significant differences among each age group (20 s vs.
30 s, P=0.594; 20 s vs.
40 s, P=0.002; 20 s vs.
50 s, P=0.002).
After reading, the changes of spherical equivalent refraction did not indicate a shift toward myopia (P=0.267).
In the RBUT, there were no significant differences between the samples (P=0.680).
Conclusions.
Chewing gum helps improve the ability of the eye to focus, especially in young adults.
American Psychological Association (APA)
Asakawa, Ken& Kanno, Susumu& Ando, Tomonori& Osawa, Kenji& Ishikawa, Hitoshi. 2020. The Effects of Chewing Gum in Preventing Eyestrain. BioMed Research International،Vol. 2020, no. 2020, pp.1-7.
https://search.emarefa.net/detail/BIM-1132523
Modern Language Association (MLA)
Asakawa, Ken…[et al.]. The Effects of Chewing Gum in Preventing Eyestrain. BioMed Research International No. 2020 (2020), pp.1-7.
https://search.emarefa.net/detail/BIM-1132523
American Medical Association (AMA)
Asakawa, Ken& Kanno, Susumu& Ando, Tomonori& Osawa, Kenji& Ishikawa, Hitoshi. The Effects of Chewing Gum in Preventing Eyestrain. BioMed Research International. 2020. Vol. 2020, no. 2020, pp.1-7.
https://search.emarefa.net/detail/BIM-1132523
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1132523