Evidence map›Paper›PMID 28251836›Full record

SynthesisActa ophthalmologica2017

Time spent in outdoor activities in relation to myopia prevention and control: a meta-analysis and systematic review.

Shuyu Xiong, Padmaja Sankaridurg, Thomas Naduvilath, Jiajie Zang, Haidong Zou, Jianfeng Zhu, Minzhi Lv, Xiangui He, Xun Xu

2 registry-linked trialsOpen access · bronzeAbstract readMeta-AnalysisSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in Acta ophthalmologica, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 301 papers, 19 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
301citing papers in PubMed, 19 pooled it
21.9field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03983278 nacompletednot on this mapstarted 2019, after this paper: background citation

PRISSM (Perfecting Refraction in India With Superior Service Models): A Cluster-randomized Controlled Trial of Three Models of School-based Spectacle Service Delivery in India

TypeinterventionalSponsorSun Yat-sen UniversityRan2019 to 2020Enrolled162ConditionsRefractive ErrorArmsSchool Model, Referral Model, Referral Model + Cost Recovery
NCT05594732 nacompletednot on this mapstarted 2022, after this paper: background citation

The Effects of Different Outdoor Light Exposure Modes on Retinal Blood Flow in School Students: a Randomized Controlled Trial

TypeinterventionalSponsorShanghai Eye Disease Prevention and Treatment CenterRan2022 to 2022Enrolled81ConditionsMyopiaArmsWeak outdoor light, Strong outdoor light
3 · Its place in the literature

Who cites it

301 citing papers in PubMed, 19 syntheses or guidelines pooled it, 588 citations in OpenAlex.

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  18. Coronavirus disease 2019 outbreak and associated public health measures increase the progression of myopia among children and adolescents: Evidence synthesis.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2022
    Pooled it
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241 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 6 institutions in 3 countries.

Shuyu XiongDepartment of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, China.
Padmaja SankaridurgBrien Holden Vision Institute, Sydney, New South Wales, Australia.
Thomas NaduvilathBrien Holden Vision Institute, Sydney, New South Wales, Australia.
Jiajie ZangDepartment of Nutrition, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China.
Haidong ZouDepartment of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, China.
Jianfeng ZhuDepartment of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, China.
Minzhi LvDepartment of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, China.
Xiangui HeDepartment of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, China.
Xun XuDepartment of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, China.
Shanghai Eye Disease Prevention & Treatment Center · CNBrien Holden Vision Institute · AUShanghai First People's Hospital · CNShanghai Jiao Tong University · CNShanghai Municipal Center For Disease Control Prevention · CNShanghai Public Health Clinical Center · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Outdoor time is considered to reduce the risk of developing myopia. The purpose is to evaluate the evidence for association between time outdoors and (1) risk of onset of myopia (incident/prevalent myopia); (2) risk of a myopic shift in refractive error and c) risk of progression in myopes only. A systematic review followed by a meta-analysis and a dose-response analysis of relevant evidence from literature was conducted. PubMed, EMBASE and the Cochrane Library were searched for relevant papers. Of the 51 articles with relevant data, 25 were included in the meta-analysis and dose-response analysis. Twenty-three of the 25 articles involved children. Risk ratio (RR) for binary variables and weighted mean difference (WMD) for continuous variables were conducted. Mantel-Haenszel random-effects model was used to pool the data for meta-analysis. Statistical heterogeneity was assessed using the I

Indexed as

Leisure ActivitiesHumansMyopiaTime Factorsdose-response analysismeta-analysismyopiaoutdoor time

Identifiers

PMID28251836
PMCPMC5599950
OpenAlexW2592774827

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.