Evidence map›Paper›PMID 33737652›Full record

ArticleScientific reports2021

Time spent outdoors in childhood is associated with reduced risk of myopia as an adult.

Gareth Lingham, Seyhan Yazar, Robyn M Lucas, Elizabeth Milne, Alex W Hewitt, Christopher J Hammond, Stuart MacGregor, Kathryn A Rose, Fred K Chen, Mingguang He and 7 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 3 pooled it
8.1field-weighted citation impact, top 2% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

45 citing papers in PubMed, 3 syntheses or guidelines pooled it, 63 citations in OpenAlex.

  1. Conjunctival Ultraviolet Autofluorescence: A Systematic Review of Factors Affecting Observed Ocular Damage.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Review
  10. Article
  11. Lethal Heat and Humidity Events.Annual review of environment and resources · 2025
    Article
  12. Article
  13. Article
  14. Childhood Myopia Part I: Contemporary Treatment Options.Investigative ophthalmology & visual science · 2025
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

17 authors at 13 institutions in 4 countries.

Gareth LinghamCentre for Ophthalmology and Visual Science (Incorporating Lions Eye Institute), The University of Western Australia, Perth, Australia.
Seyhan YazarCentre for Ophthalmology and Visual Science (Incorporating Lions Eye Institute), The University of Western Australia, Perth, Australia.
Robyn M LucasCentre for Ophthalmology and Visual Science (Incorporating Lions Eye Institute), The University of Western Australia, Perth, Australia.
Elizabeth MilneTelethon Kids Institute, The University of Western Australia, Perth, Australia.
Alex W HewittCentre for Ophthalmology and Visual Science (Incorporating Lions Eye Institute), The University of Western Australia, Perth, Australia.
Christopher J HammondSection of Academic Ophthalmology, School of Life Course Sciences, King's College London, London, UK.
Stuart MacGregorStatistical Genetics Lab, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia.
Kathryn A RoseDiscipline of Orthoptics, Graduate School of Health, University of Technology Sydney, Sydney, Australia.
Fred K ChenCentre for Ophthalmology and Visual Science (Incorporating Lions Eye Institute), The University of Western Australia, Perth, Australia.
Mingguang HeCentre for Eye Research Australia, Department of Ophthalmology and Surgery, University of Melbourne, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Jeremy A GuggenheimSchool of Optometry and Vision Sciences, Cardiff University, Cardiff, UK.
Michael W ClarkeMetabolomics Australia, Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, Perth, Australia.
Seang-Mei SawDepartment of Epidemiology and Public Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
Cathy WilliamsDepartment of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.
Minas T CoroneoDepartment of Ophthalmology, University of New South Wales, Sydney, Australia.
Leon StrakerSchool of Physiotherapy and Exercise Science, Curtin University, Perth, Australia.
David A MackeyCentre for Ophthalmology and Visual Science (Incorporating Lions Eye Institute), The University of Western Australia, Perth, Australia. davidmackey@lei.org.au.
Lions Eye Institute · AUUniversity of Western Australia · AUCardiff University · GBCurtin University · AUKing's College London · GBNational University of Singapore · SGQIMR Berghofer Medical Research Institute · AUSun Yat-sen University · CNThe Kids Research Institute Australia · AUUniversity of Bristol · GBUniversity of Tasmania · AUUniversity of Technology Sydney · AUUNSW Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Myopia (near-sightedness) is an important public health issue. Spending more time outdoors can prevent myopia but the long-term association between this exposure and myopia has not been well characterised. We investigated the relationship between time spent outdoors in childhood, adolescence and young adulthood and risk of myopia in young adulthood. The Kidskin Young Adult Myopia Study (KYAMS) was a follow-up of the Kidskin Study, a sun exposure-intervention study of 1776 children aged 6-12 years. Myopia status was assessed in 303 (17.6%) KYAMS participants (aged 25-30 years) and several subjective and objective measures of time spent outdoors were collected in childhood (8-12 years) and adulthood. Index measures of total, childhood and recent time spent outdoors were developed using confirmatory factor analysis. Logistic regression was used to assess the association between a 0.1-unit change in the time outdoor indices and risk of myopia after adjusting for sex, education, outdoor occupation, parental myopia, parental education, ancestry and Kidskin Study intervention group. Spending more time outdoors during childhood was associated with reduced risk of myopia in young adulthood (multivariable odds ratio [OR] 0.82, 95% confidence interval [CI] 0.69, 0.98). Spending more time outdoors in later adolescence and young adulthood was associated with reduced risk of late-onset myopia (≥ 15 years of age, multivariable OR 0.79, 95% CI 0.64, 0.98). Spending more time outdoors in both childhood and adolescence was associated with less myopia in young adulthood.

Indexed as

Leisure ActivitiesAdolescentAdultChildExerciseFemaleHumansMaleMyopiaRisk FactorsRisk Reduction BehaviorSurveys and QuestionnairesYoung Adult

Identifiers

PMID33737652
PMCPMC7973740
OpenAlexW3138806775

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.