Evidence map›Paper›PMID 31531234›Full record

ArticleJournal of ophthalmology2019

Prevalence and Risk Factors of Myopia in Spain.

Cristina C Alvarez-Peregrina, Miguel Angel M A Sanchez-Tena, Clara C Martinez-Perez, Cesar C Villa-Collar

Abstract read
In one paragraph

Article in Journal of ophthalmology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

34 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Regional variations and temporal trends of childhood myopia prevalence in Africa: A systematic review and meta-analysis.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2022
    Pooled it
  3. Trial
  4. One-year results of the Variation of Orthokeratology Lens Treatment Zone (VOLTZ) Study: a prospective randomised clinical trial.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2021
    Trial
  5. Incidence and Risk Factors of Refractive Error in Children in Spain: CISViT Project.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Lifestyle Factors in Myopic Spanish Children.Children (Basel, Switzerland) · 2024
    Article
  15. The Prevalence and Risk Factors of Abnormal Vision Among Preschool Children.Pediatric health, medicine and therapeutics · 2024
    Article
  16. Article
  17. Article
  18. Risk Factors for Myopia: A Review.Journal of clinical medicine · 2023
    Review
  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

4 authors.

Cristina C Alvarez-PeregrinaFaculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid 20822, Spain.ORCID https://orcid.org/0000-0003-1097-4581
Miguel Angel M A Sanchez-TenaFaculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid 20822, Spain.ORCID https://orcid.org/0000-0002-2583-1789
Clara C Martinez-PerezFaculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid 20822, Spain.
Cesar C Villa-CollarFaculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid 20822, Spain.ORCID https://orcid.org/0000-0002-6743-8264

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo analyse the prevalence of myopia among a sample of more than 6000 children in Spain as well as to determine the impact of risk factors in its progression. METHODOLOGY: A total of 6,152 children aged from 5 to 7 were examined. The participants underwent an eye examination that included visual acuity, refraction without cycloplegia, and tests of accommodative and binocular function. In addition, a questionnaire regarding their lifestyle, family history, and geographical data was carried out. Finally, data were analysed using the SPSS version 25 program.

resultsThe prevalence of myopia in the sample of children studied has increased from 17% in 2016 to 20% in 2017. Likewise, the number of children with high myopia has also increased, from 1.7% in 2016 to 3.6% in 2017. 43.3% of the participants spent more than 3 hours a day doing near activities, and 48.9% of this group spent more than 50% of this time using electronic devices. In addition, only 9.7% spent more than 2.5 hours outdoors each day.

conclusionMyopia prevalence appears to be increasing in Spain. Lifestyle factors appear to be increasing the risk of myopia.

Identifiers

PMID31531234
PMCPMC6721398

What OpenQuestion holds

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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.