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The Evolutionary Model of Mild-to-moderate Myopia in China

NCT ID: NCT02667509

Last Updated: 2016-04-14

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

852441 participants

Study Classification

OBSERVATIONAL

Study Start Date

2005-01-31

Study Completion Date

2015-10-31

Brief Summary

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Myopia has emerged as a major health issue in east Asia, because of its increasingly high prevalence in the past few decades (now 80-90% in school-leavers), and because of the sight-threatening pathologies associated with high myopia, which now aff ects 10-20% of those completing secondary schooling in this part of the world. Similar, but less marked, changes are occurring in other parts of the world. The higher prevalence of myopia in east Asian cities seems to be associated with increasing educational pressures, combined with life-style changes, which have reduced the time children spend outside.

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Detailed Description

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Myopia has emerged as a major health issue in east Asia, because of its increasingly high prevalence in the past few decades (now 80-90% in school-leavers), and because of the sight-threatening pathologies associated with high myopia, which now aff ects 10-20% of those completing secondary schooling in this part of the world. Similar, but less marked, changes are occurring in other parts of the world. The higher prevalence of myopia in east Asian cities seems to be associated with increasing educational pressures, combined with life-style changes, which have reduced the time children spend outside.

In this trial, the investigators aim to study the evolutionary model of myopia in China, which could provide new insight into the social development and human adaptation.

Conditions

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Refractive Error

Study Design

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Study Time Perspective

CROSS_SECTIONAL

Eligibility Criteria

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Inclusion Criteria

* Patients complete the examination of Refractive error from 2005 to 2015 year.

Exclusion Criteria

* Patients could not complete the examination of Refractive error
Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Ministry of Health, China

OTHER_GOV

Sponsor Role collaborator

Sun Yat-sen University

OTHER

Sponsor Role lead

Responsible Party

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Erping Long

Principal Investigator, Home for Cataract Children, Zhongshan Ophthalmic Center

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Haotian Lin Lin, M.D., Ph.D

Role: STUDY_DIRECTOR

Zhongshan Ophthalmic Center, Sun Yat-sen University

Yizhi Liu, M.D., Ph.D

Role: STUDY_CHAIR

Zhongshan Ophthalmic Center, Sun Yat-sen University

Erping Long, M.D., Ph.D

Role: PRINCIPAL_INVESTIGATOR

Zhongshan Ophthalmic Center, Sun Yat-sen University

Locations

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Zhongshan Ophthalmic Center, Sun Yat-sen University

Guangzhou, Guangdong, China

Site Status

Countries

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China

References

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Morgan IG, Ohno-Matsui K, Saw SM. Myopia. Lancet. 2012 May 5;379(9827):1739-48. doi: 10.1016/S0140-6736(12)60272-4.

Reference Type BACKGROUND
PMID: 22559900 (View on PubMed)

Related Links

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http://www.gzzoc.com/

Home page of Zhongshan Ophthalmic Center

Other Identifiers

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CCPMOH2016-China2

Identifier Type: -

Identifier Source: org_study_id

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