Effect of Increasing Time Spent Outdoors on Myopia Prevention in School-Aged Children in Northeast China

NCT02271373 | Completed DMC

• 1 other identifier: 2013001
• Study Type: interventional
• Target: 3,521
• Locations: 0 countries
• Sites: N/A

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.

Conditions

Myopia

Keywords

Vision, Ocular; Physical activity; Schoolchildren; Intervention Studies

Outcome Measures

Primary Outcomes (1)

• Changes in uncorrected visual acuity

  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.

  Baseline, Month 6, Month 12

Secondary Outcomes (2)

• Questionnaire survey

  Baseline

• Changes in ocular biometric parameters

  Baseline, Month 12

Study Arms (2)

intervention group

EXPERIMENTAL

The intervention group undertook interventions by increasing time spent outdoors. The interventions composed of performing two additional recess program lasting 30 minutes outside the classroom that encouraged children to go outside for outdoor activities during recess in both the morning and afternoon during school days within a intervention period of 1 school year.

Behavioral: increasing time spent outdoors

control group

NO INTERVENTION

The control school did not have any interventions.

Interventions

increasing time spent outdoors BEHAVIORAL

The intervention group undertook interventions by increasing time spent outdoors. The interventions composed of performing two additional recess program lasting 30 minutes outside the classroom that encouraged children to go outside for outdoor activities during recess in both the morning and afternoon during school days within a intervention period of 1 school year.

intervention group

Eligibility Criteria

• Age: 6 Years - 14 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17)

You may qualify if:

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

You may not qualify if:

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

Sponsors & Collaborators

• Anhui Medical University: lead

Related Publications (1)

• Jin JX, Hua WJ, Jiang X, Wu XY, Yang JW, Gao GP, Fang Y, Pei CL, Wang S, Zhang JZ, Tao LM, Tao FB. Effect of outdoor activity on myopia onset and progression in school-aged children in northeast China: the Sujiatun Eye Care Study. BMC Ophthalmol. 2015 Jul 9;15:73. doi: 10.1186/s12886-015-0052-9.

  PMID: 26152123 DERIVED

MeSH Terms

Conditions

Myopia; Motor Activity

Condition Hierarchy (Ancestors)

Refractive Errors; Eye Diseases; Behavior

Study Officials

• Fangbiao Tao, PhD

  Department of Maternal, Child and Maternal Health, School of Public Health, Anhui Medical University

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, OUTCOMES ASSESSOR
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Dean of School of Public Health, Anhui Medical University

Study Record Dates

• First Submitted: October 19, 2014
• First Posted: October 22, 2014
• Study Start: November 1, 2012
• Primary Completion: November 1, 2013
• Study Completion: February 1, 2014
• Last Updated: October 23, 2014

Record last verified: 2014-10