Environmental Health and Myopia Prevention and Control

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

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04161326

Enrollment

100000

Registered

2019-11-13

Start date

2016-01-01

Completion date

2021-12-30

Last updated

2020-02-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Myopia (Disorder), Refractive Errors

Brief summary

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.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

6 Years to 9 Years

Healthy volunteers

Yes

Inclusion criteria

* schoolchildren in the 1st to 4th grades

Exclusion criteria

* schoolchildren unwilling to participate

Design outcomes

Primary

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

Countries

China

Contacts

Primary ContactYahan Yang, M.D

yah.yang39@hotmail.com+8615521013933

Outcome results