Evidence map›Paper›PMID 37598286›Full record

ArticleScientific reports2023

A large-scale analysis of refractive errors in students attending public primary schools in Mexico.

Marco Antonio Ramírez-Ortiz, Mónica Amato-Almanza, Iván Romero-Bautista, Miguel Klunder-Klunder, Oswaldo Aguirre-Luna, Iryna Kuzhda, Serge Resnikoff, Kristen Allison Eckert, Van Charles Lansingh

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

9 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
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  3. The Changing Natural History of Anisometropia: A Scoping Review.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
    Article
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  9. Retinoscopes: Past and present.World journal of methodology · 2024
    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

9 authors at 5 institutions in 4 countries.

Marco Antonio Ramírez-OrtizOphthalmology Department, Hospital Infantil de México Federico Gómez, Mexico City, Mexico.
Mónica Amato-AlmanzaOphthalmology Department, Hospital Infantil de México Federico Gómez, Mexico City, Mexico.
Iván Romero-BautistaSchool of Optometry, UNAM-FES Iztacala, Tlalnepantla, State of Mexico, Mexico.
Miguel Klunder-KlunderResearch Division, Hospital Infantil de México Federico Gómez, Mexico City, Mexico.
Oswaldo Aguirre-LunaOphthalmology Department, Hospital Infantil de México Federico Gómez, Mexico City, Mexico.
Iryna KuzhdaOphthalmology Department, Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine.
Serge ResnikoffBrien Holden Vision Institute, Sydney, NSW, Australia.
Kristen Allison EckertIndependent Consultant, San Antonio Tlayacapan, Jalisco, Mexico.
Van Charles LansinghDepartment of Public Health Sciences, University of Miami Miller School of Medicine, Miami, FL, USA. van.lansingh@imoiap.edu.mx.
Hospital Infantil de México Federico Gómez · MXAutonomous University of Tlaxcala · MXBrien Holden Vision Institute · AUIvano-Frankivsk National Medical University · UAUniversity of Miami · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A cross-sectional, retrospective study was conducted from September 2013 through July 2014 to determine the prevalence of refractive errors among students attending public primary schools in Mexico. Among 3,861,156 students at 14,566 public primary schools in all 32 states of Mexico, teachers identified reduced visual acuity in 1,253,589 (32.5%) using visual acuity measurement. Optometrists confirmed 391,498 [31.2%, mean (SD) age: 8.8 (1.9) years; 204,110 girls (52.9%)] had refractive errors using visual acuity measurement and noncycloplegic static retinoscopy. Among 288,537 (72.4%) of children with previous eyeglasses usage data reported, 241,505 (83.7%) had uncorrected refractive errors. Before prescription eyeglasses were provided, 281,891 students (72%) had logMAR visual acuity ≤ 0.2; eyeglasses corrected vision loss in 85.6% (n = 241,352) of them. Simple myopic astigmatism was the most frequent refractive error (25.7%, n = 100,545). Astigmatism > - 1.00 diopters was present in 54.6% of all students with ametropia. The anisometropia rate based on spherical equivalent difference between right and left eye ≥ 1.50 diopters was 3.9% (n = 15,402). Uncorrected refractive errors are an important issue in primary school students in Mexico. An updated study is needed to analyze the evolving trends over the past decade.

Indexed as

AstigmatismRefractive ErrorsChildCross-Sectional StudiesFemaleHumansMexicoRetrospective StudiesSchoolsStudents

Identifiers

PMID37598286
PMCPMC10439951
OpenAlexW4385999741

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.