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Japanese

Prevention of myopia with Ciliary Muscle Stretching in primary school children: A comparison of two primary schools in Tokyo Takahide Fukuyo 1 , Narumichi Yamamoto 2 1Fukuyo Eye Clinic 2Oji Eye Clinic pp.94-100
Published Date 2022/1/15
DOI https://doi.org/10.11477/mf.1410214276
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Abstract Purpose:To evaluate the effectiveness of ciliary muscle stretching(CMS)for preventing myopia in primary school children.

Subjects and methods:CMS is a technique for relaxing and straining ciliary muscles through near and distant gazing, alternatively. Gazing is repeated five times at 1-second intervals for 10 seconds;no special equipment is necessary. CMS was expected to prevent myopia by restoring overstrained ciliary muscle to its original state after near work. CMS was introduced annually at a primary school in Tokyo(school A)from 2001 to 2018;it was recommended for use after near work for the prevention of myopia. At another primary school(school B, 1.5 km away from school A), CMS was not used during this period. Uncorrected visual acuity(UCVA)scores from 2001 to 2018 and refractive errors — spherical equivalent(SE)— in 2018 were compared between schools A and B.

Results:The proportions of UCVA<1.0 in school A decreased from 51.7% in 2001 to 27.3% in 2018;in school B, it increased from 31.4% in 2003 to 44.5% in 2018. The proportions of SE≦−0.5D in 2018 was 25.8% in school A and 35.3% in school B. Significant differences were found in mean SE between the two schools in the third(p<0.005), sixth(p<0.01), and all(p<0.05)grades.

Conclusion:CMS was effective at preventing myopia in primary school children.


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