Environmental Health and Myopia Prevention and Control

February 22, 2020 updated by: Haotian Lin, Sun Yat-sen University

Environmental Health and Myopia Prevention and Control: A Longitudinal Study in China

Myopia is one of the major causes of low visual acuity during childhood. It is generally more prevalent in urban areas than in rural areas. Current evidence does not address our understanding of the myopia incidence and development and associated risk geographic factors, such as green spaces. Therefore, our study aimed to evaluate the association between geographic factors and myopia base on a population-based large-scaled cohort design.

Study Overview

Status

Unknown

Conditions

Study Type

Observational

Enrollment (Anticipated)

100000

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, 510000
        • Recruiting
        • Zhongshan Ophthalmic Center, Sun Yat-sen University
        • Contact:

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

6 years to 9 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

A prospective longitudinal cohort study of schoolchildren who studied in the 1st to 4th grades was performed.

Description

Inclusion Criteria:

  • schoolchildren in the 1st to 4th grades

Exclusion Criteria:

  • schoolchildren unwilling to participate

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
the changes of spherical equivalent refractive (RSE)
Time Frame: up to 3 years
A multi-linear regression was used.
up to 3 years

Collaborators and Investigators

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

Sponsor

Sun Yat-sen University

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 (Actual)

January 1, 2016

Primary Completion (Actual)

December 30, 2019

Study Completion (Anticipated)

December 30, 2021

Study Registration Dates

First Submitted

November 11, 2019

First Submitted That Met QC Criteria

November 11, 2019

First Posted (Actual)

November 13, 2019

Study Record Updates

Last Update Posted (Actual)

February 25, 2020

Last Update Submitted That Met QC Criteria

February 22, 2020

Last Verified

February 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CCPMOH2016-China-0304

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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