Guangzhou Outdoor Activity Longitudinal Study

November 19, 2010 updated by: Sun Yat-sen University

A Controlled Clinical Trial of the Effect of Increases Time Outdoors in the Prevention of Juvenile-onset Myopia in Chinese Children

The purpose of this study is to assess whether outdoor activities are effective in preventing the development and progression of juvenile-onset myopia in Chinese children.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

  1. To determine if increased engagement in outdoor activities reduces the development and progression of myopia in Chinese school children.
  2. To identify the risk factors associated with the development and progression of juvenile-onset myopia.
  3. To characterize the interaction between refractive error and education.

Study Type

Interventional

Enrollment (Anticipated)

2000

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
    • Guangdong
      • Guangzhou, Guangdong, China, 510060
        • Zhongshan Ophthalmic Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • All the students in Grade 1

Exclusion Criteria:

  • No

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
No Intervention: Control
Experimental: Outdoor activity
Adding 1 hour outdoor time into school curricula
Behavioral: Outdoor activity
Adding 1 hour outdoor time into school curricula

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Cycloplegic refraction
Time Frame: 1 year
1 year

Secondary Outcome Measures

Outcome Measure
Time Frame
Visual acuity
Time Frame: 6 months
6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sun Yat-sen University

Investigators

  • Principal Investigator: Mingguang He, PhD, MD, Zhongshan Ophthalmic Center, Sun Yat-sen University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2009

Primary Completion (Anticipated)

April 1, 2012

Study Completion (Anticipated)

July 1, 2012

Study Registration Dates

First Submitted

February 19, 2009

First Submitted That Met QC Criteria

February 19, 2009

First Posted (Estimate)

February 20, 2009

Study Record Updates

Last Update Posted (Estimate)

November 22, 2010

Last Update Submitted That Met QC Criteria

November 19, 2010

Last Verified

October 1, 2010

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GOAL2009

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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