Evidence map›Paper›PMID 40354426›Full record

ArticlePloS one2025

Impact of spectacle use on academic performance among Vietnamese adolescents with reduced visual acuity and myopia: A school-based study.

Hoang Thuy Linh Nguyen, Xuan Minh Tri Tran, Keiko Nakamura, Kaoruko Seino, Yuri Tashiro, Ayano Miyashita, Tae Igarashi-Yokoi, Van Thang Vo, Kyoko Ohno-Matsui

Abstract read
In one paragraph

Article in PloS one, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–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

3 citing papers in PubMed.

  1. 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
  2. Review
  3. Review
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.

Hoang Thuy Linh NguyenFaculty of Public Health, Hue University of Medicine and Pharmacy, Hue University, Hue, Vietnam.ORCID https://orcid.org/0000-0001-7231-9895
Xuan Minh Tri TranFaculty of Public Health, Hue University of Medicine and Pharmacy, Hue University, Hue, Vietnam.ORCID https://orcid.org/0000-0001-5418-1597
Keiko NakamuraDepartment of Global Health Entrepreneurship, Institute of Science Tokyo (Science Tokyo), Tokyo, Japan.ORCID https://orcid.org/0000-0002-9119-4730
Kaoruko SeinoDepartment of Global Health Entrepreneurship, Institute of Science Tokyo (Science Tokyo), Tokyo, Japan.
Yuri TashiroDepartment of Global Health Entrepreneurship, Institute of Science Tokyo (Science Tokyo), Tokyo, Japan.ORCID https://orcid.org/0000-0003-1436-2494
Ayano MiyashitaDepartment of Global Health Entrepreneurship, Institute of Science Tokyo (Science Tokyo), Tokyo, Japan.ORCID https://orcid.org/0000-0002-6742-4073
Tae Igarashi-YokoiDepartment of Ophthalmology and Visual Science, Institute of Science Tokyo (Science Tokyo), Tokyo, Japan.
Van Thang VoFaculty of Public Health, Hue University of Medicine and Pharmacy, Hue University, Hue, Vietnam.
Kyoko Ohno-MatsuiDepartment of Ophthalmology and Visual Science, Institute of Science Tokyo (Science Tokyo), Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesUntreated cataracts and uncorrected refractive errors are the leading causes of vision impairment worldwide. Timely correction of refractive errors can significantly improve visual function and daily life. This study examined the impact of spectacle use on the academic performance of schoolchildren with reduced visual acuity (VA) and myopia.

methodsThis cross-sectional study included 647 students from five secondary schools in Hue City, Vietnam. Students underwent comprehensive eye examinations, including VA, autorefractometry, and axial length measurements, and a structured questionnaire was completed. The primary outcome was academic performance, based on grade point average (GPA), math, and literature scores. Generalized linear models were utilized to examine the association between spectacle use and students' academic performance.

resultsThe mean spherical equivalent was -0.92 ± 1.62 diopters, and the mean axial length was 23.32 ± 1.07 mm. The prevalence of reduced VA (uncorrected VA ≤ 7/10) and myopia (spherical equivalent ≤ -0.5 diopters) was 23.2% and 48.7%, respectively. Almost two-thirds of myopic students did not wear spectacles. Spectacle use was found to be significantly associated with an increased GPA (β = 0.462; 95% confidence interval = 0.108-0.816), math scores (β = 0.517; 95% confidence interval = 0.015-1.020), and literature scores (β = 0.438; 95% confidence interval = 0.074-0.802) among students with reduced VA, and with increased literature scores (β = 0.277; 95% confidence interval = 0.046-0.509) among students with myopia.

conclusionsRefractive errors, particularly myopia, are major health concerns among secondary school students in Vietnam. Despite the need for corrective spectacles, many students do not wear them, exacerbating their vision problems. This study highlights the benefits of spectacles in improving academic performance for students with reduced VA and myopia.

Indexed as

Academic PerformanceEyeglassesMyopiaVisual AcuityAdolescentChildCross-Sectional StudiesFemaleHumansMaleSchoolsSoutheast Asian PeopleStudentsVietnam

Identifiers

PMID40354426
PMCPMC12068628

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.