Prevalence and Environmental Factors for Myopia Among Chinese School-aged Children and Adolescent in Tianjin

Overview

The high prevalence of myopia has become a global public health problem. The study amied to investigate the prevalence and progression of myopia associated with social environmental factors in Tianjin, a Chinese megacity in north China.

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Prospective
  • Study Primary Completion Date: December 1, 2022

Detailed Description

The high prevalence of myopia has become a global public health problem, especially in East and South Asian countries. It's still not clear for the prevalence and progression of myopia associated with social environmental factors. Thus, the investigators will conducted a long-term observational study to the effect of the socioeconomics, medical resources and school-related environmental parameters and others on the prevalence and progression of myopia among Chinese school-aged children and adolescent.

Clinical Trial Outcome Measures

Primary Measures

  • Prevalence of myopia
    • Time Frame: up to 3years
    • Myopia is defined as any eye’s SER (sphere + 1/2 cylinder) of at least -0.5 diopters (D).

Secondary Measures

  • Changes in prevalence of myopia
    • Time Frame: up to 3years
    • Myopia is defined as any eye’s SER (sphere + 1/2 cylinder) of at least -0.5 diopters (D).
  • Changes of Spherical equivalent
    • Time Frame: changes from baseline at 36months
    • Changes of Spherical equivalent

Participating in This Clinical Trial

Inclusion Criteria

  • aged 6 to 18 years – no ocular diseases and systemic diseases – consent to undergo an eye examination Exclusion Criteria:

  • schoolchildren unwilling to participate

Gender Eligibility: All

Minimum Age: 6 Years

Maximum Age: 18 Years

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • Tianjin Eye Hospital
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Official(s)
    • yan wang, Study Chair, Tianjin Eye Hospital
  • Overall Contact(s)
    • xiaoyan yang, director, +8627306525, yanzitjsykyy@163.com

References

Morgan IG, French AN, Ashby RS, Guo X, Ding X, He M, Rose KA. The epidemics of myopia: Aetiology and prevention. Prog Retin Eye Res. 2018 Jan;62:134-149. doi: 10.1016/j.preteyeres.2017.09.004. Epub 2017 Sep 23.

Guo Y, Liu LJ, Xu L, Lv YY, Tang P, Feng Y, Meng M, Jonas JB. Outdoor activity and myopia among primary students in rural and urban regions of Beijing. Ophthalmology. 2013 Feb;120(2):277-83. doi: 10.1016/j.ophtha.2012.07.086. Epub 2012 Oct 23.

Tenovuo J, Mielityinen H, Paunio K. The effect of dental plaque grown in the presence of xylitol or sucrose on bone resorption in vitro. Pharmacol Ther Dent. 1981;6(1-2):35-43.

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