Efficacy of Chinese Ocular Exercise on Visual Acuity and Ocular Accommodation in Myopic Teenager

Study Overview
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Brief Summary
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To assess whether Chinese ocular exercise is effective in altering distant and near visual acuity, ocular accommodation and visual symptoms in myopic teenager, and thus might have the possibility of slowing myopia progression in teenager through a weak but long-term effect.

Detailed Description
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Myopia is a public health problem worldwide, especially in some Asian countries like China, Singapore, and Japan. Chinese ocular exercise, originating in 1963 with the theory of Traditional Chinese Medicine, is a kind of massage on acupuncture points around the eye to prevent myopia and alleviate visual fatigue. The exercise has been spread as a community ritual and living habit of primary and high school students for nearly half a century. However, the prevalence of myopia in Chinese children increased remarkably in recent years. Therefore, the efficacy of Chinese ocular exercise on preventing myopia or alleviating visual fatigue is widely questioned. Evidence from clinical trials of high level is needed to clarify that whether Chinese ocular exercise is effective in slowing and preventing myopia progression, or at least in part in easing the symptoms related to myopia and visual fatigue.

Official Title
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A Randomized Controlled Trial to Alter Ocular Accommodation in Myopic Teenager With Chinese Ocular Exercise

Conditions
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Myopia

Intervention / Treatment
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* Other: Chinese ocular exercise


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Visual acuity: 20/20 or better in each eye; Spherical error ranging from +0.5 D to -6.0 D and astigmatism less than 1.5 D in each eye, anisometropia less than 1.0 D between the two eyes Contact lens No strabismus, amblyopia and any other ocular or systematic diseases that may affect refractive development Exclusion Criteria: Currently using other interventions to control myopia progression (acupuncture, massage, drugs, ear needles and so on) Unable to cooperate with the ocular examination and questionnaire survey

Ages Eligible for Study
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Minimum Age: 10 Years
Maximum Age: 16 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Standardized Chinese ocular exercise<br>The participants are trained with standardized Chinese ocular exercise which contains accurate positions of acupuncture points and appropriate pressure on the points. | Other: Chinese ocular exercise<br>* A kind of massage around the acupuncture points around the eye.<br>|
| Sham Comparator: Nonstandardized ocular exercise<br>The participants are trained with nonstandardized ocular exercise performed on wrong positions where no acupuncture points at all. | Other: Chinese ocular exercise<br>* A kind of massage around the acupuncture points around the eye.<br>|
| No Intervention: Eye closure<br>The participants are told to close eyes and don't do ocular exercise at all. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Distant and near visual acuity |  | Before and after the intervention immediately, about 5 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Ocular accommodation |  | Before and after the intervention immediately, about 5 minutes |