- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT02271373
Effect of Increasing Time Spent Outdoors on Myopia Prevention in School-Aged Children in Northeast China
22 oktober 2014 uppdaterad av: Fangbiao Tao, Anhui Medical University
Development and Application of Appropriate Technology for Myopia Prevention and Control
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.
Studieöversikt
Status
Avslutad
Betingelser
Intervention / Behandling
Detaljerad beskrivning
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 among elementary and secondary school students in northeast China.
It is expected that the results will provide evidences for policy-makers and school healthcare providers for their school children myopia prevention.
Studietyp
Interventionell
Inskrivning (Faktisk)
3521
Fas
- Inte tillämpbar
Deltagandekriterier
Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.
Urvalskriterier
Åldrar som är berättigade till studier
6 år till 14 år (Barn)
Tar emot friska volontärer
Nej
Kön som är behöriga för studier
Allt
Beskrivning
Inclusion Criteria:
- Grade of 1 to 5 in elementary schools and grade of 7 to 8 in secondary schools.
Exclusion Criteria:
- Visual defect or other eye diseases; wearing orthokeratology; refractive surgery history.
Studieplan
Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Förebyggande
- Tilldelning: Icke-randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Dubbel
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
---|---|
Experimentell: intervention group
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.
|
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.
|
Inget ingripande: control group
The control school did not have any interventions.
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
---|---|---|
Changes in uncorrected visual acuity
Tidsram: Baseline, Month 6, Month 12
|
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
|
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
---|---|---|
Questionnaire survey
Tidsram: Baseline
|
The parents and children underwent an interview together.
The questionnaire included questions on children's gender, ethnicity, region of habitation; questions on parental education level, the monthly family income and whether the parents were myopic or not;.
The interview also included questions on the amount of time spent for learning (reading or writing), screen time (television, computer, etc) and time spent outdoors after school in recent 7 days.
|
Baseline
|
Changes in ocular biometric parameters
Tidsram: Baseline, Month 12
|
A random subsample (12.8%) underwent cycloplegia.
After ensuring that there was no risk for a medical mydriasis, cycloplegia was performed at baseline and intervention after 1 year in the Shenyang Aier Ophthalmology Hospital, respectively.
Ocular biometric parameters (axial length, corneal curvature, anterior chamber depth and IOP) were measured in both eyes of all participants.
Axial length, corneal curvature and anterior chamber depth were measured with IOL Master (intraoeular len master, IOL.
Master) (Carl Zeiss Meditex, Jena, Germany); Intraocular pressure (IOP) measurement was obtained using a non-contact tonometry (NT-510, NIDEK, Gamagori, Japan).
Cycloplegia was achieved by 0.5% tropicamide eye drops.
Six drops of tropicamide 0.5% were administered at 5-minute intervals for both eyes.
Refractometry was performed 20 minutes after the last cycle of cycloplegic eye drops by retinoscopy (YZ-24, Suzhou, China).
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Baseline, Month 12
|
Samarbetspartners och utredare
Det är här du hittar personer och organisationer som är involverade i denna studie.
Sponsor
Utredare
- Studierektor: Fangbiao Tao, PhD, Department of Maternal, Child and Maternal Health, School of Public Health, Anhui Medical University
Publikationer och användbara länkar
Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.
Studieavstämningsdatum
Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.
Studera stora datum
Studiestart
1 november 2012
Primärt slutförande (Faktisk)
1 november 2013
Avslutad studie (Faktisk)
1 februari 2014
Studieregistreringsdatum
Först inskickad
19 oktober 2014
Först inskickad som uppfyllde QC-kriterierna
21 oktober 2014
Första postat (Uppskatta)
22 oktober 2014
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
23 oktober 2014
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
22 oktober 2014
Senast verifierad
1 oktober 2014
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- 2013001
Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .
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