Development and Application of Appropriate Technology for Myopia Prevention and Control

Anhui Medical University0 sites3,521 target enrollmentNovember 2012

Overview

Brief Summary

The purpose of this study is to develop a school-based intervention aimed at prevent the onset and development of myopia among school aged children by increasing time spent outdoors in northeast China.

Detailed Description

The purpose of this study is to develop a school-based intervention aimed at prevent the onset and development of myopia among school aged children by increasing time spent outdoors among elementary and secondary school students in northeast China. It is expected that the results will provide evidences for policy-makers and school healthcare providers for their school children myopia prevention.

Registry

clinicaltrials.gov

Start Date

November 2012

End Date

February 2014

Last Updated

11 years ago

Study Type

Interventional

Study Design

Parallel

Sex

All

Investigators

Sponsor

Anhui Medical University

Responsible Party

Principal Investigator

Fangbiao Tao

Dean of School of Public Health, Anhui Medical University

Anhui Medical University

Eligibility Criteria

Inclusion Criteria

•Grade of 1 to 5 in elementary schools and grade of 7 to 8 in secondary schools.

Exclusion Criteria

•Visual defect or other eye diseases; wearing orthokeratology; refractive surgery history.

Outcomes

Primary Outcomes

Changes in uncorrected visual acuity

Time Frame: Baseline, Month 6, Month 12

Uncorrected visual acuity (UCVA) was measured for the right eye, then the left eye, with a E Standard Logarithm Vision Acuity Chart (GB11533-2011) in 5-grade notation (5- LogMAR), with illumination of the chart around 500lx. If one of the eyes UCVA was less than 5.0, then tests with combined lenses were conducted among the poor eye-sighted for confirming the types of ametropia (normal, myopia, hyperopia or other eye diseases)．All the measurements were recorded.