Evidence map›Paper›PMID 36053639›Full record

ArticleBMJ paediatrics open2022

Effects of digital devices and online learning on computer vision syndrome in students during the COVID-19 era: an online questionnaire study.

Kasem Seresirikachorn, Warakorn Thiamthat, Wararee Sriyuttagrai, Ngamphol Soonthornworasiri, Panisa Singhanetr, Narata Yudtanahiran, Thanaruk Theeramunkong

Open access · diamondAbstract read
In one paragraph

Article in BMJ paediatrics open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
8.7field-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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 40 citations in OpenAlex.

  1. Pooled it
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  5. Perceived Stress, Loneliness, and Resilience in Relation to Game Addiction Among Adolescents in Bangkok During the COVID-19 Pandemic Transition Period.Journal of child and adolescent psychiatric nursing : official publication of the Association of Child and Adolescent Psychiatric Nurses, Inc · 2025
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  8. Viewing distance, font size and symptoms of eyestrain in non-presbyopic and presbyopic smartphone users.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2025
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  16. Risk factor assessment of digital eye strain during the COVID-19 pandemic: a cross-sectional survey.Medical hypothesis, discovery & innovation ophthalmology journal · 2022
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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

7 authors at 5 institutions in 2 countries.

Kasem SeresirikachornSirindhorn International Institute of Technology, Thammasat University, Khlong Nueng, Pathum Thani, Thailand.
Warakorn ThiamthatDepartment of Ophthalmology, College of Medicine, Rangsit University, Rajavithi Hospital, Bangkok, Thailand.
Wararee SriyuttagraiDepartment of Ophthalmology, Walailak University Hospital, Walailak University, Nakhon Si Thammarat, Thailand.
Ngamphol SoonthornworasiriDepartment of Tropical Hygiene, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Panisa SinghanetrDepartment of Ophthalmology, Mettapracharak(Wat Rai Khing) Hospital, Nakhon Pathom, Thailand.
Narata YudtanahiranFaculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Thanaruk TheeramunkongSirindhorn International Institute of Technology, Thammasat University, Khlong Nueng, Pathum Thani, Thailand thanaruk@siit.tu.ac.th.ORCID 0000-0003-0744-4213
Thammasat University · THChulalongkorn University · THMahidol University · THRajavithi Hospital · THWalailak University · TH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeComputer vision syndrome (CVS) describes a group of eye and vision-related problems that result from prolonged digital device use. This study aims to assess the prevalence and associated factors of CVS among students during the lockdown resulting from the COVID-19 pandemic.

methodsA cross-sectional, online, questionnaire-based study performed among high school students in Thailand.

resultsA total of 2476 students, with mean age of 15.52±1.66 years, were included in this study. The mean number of hours of digital device use per day (10.53±2.99) increased during the COVID-19 pandemic compared with before its advent (6.13±2.8). The mean number of hours of online learning was 7.03±2.06 hours per day during the pandemic. CVS was found in 70.1% of students, and its severity correlated with both the number of hours of online learning and the total number of hours of digital device usage (p<0.001). Multiple logistic regression analysis revealed that the factors associated with CVS included age ≤15 years (adjusted OR (AOR)=2.17), overall digital device usage >6 hours per day (AOR=1.91), online learning >5 hours per day (AOR=4.99), multiple digital device usage (AOR=2.15), refractive errors (AOR=2.89), presence of back pain (AOR=2.06) and presence of neck pain (AOR=2.36).

conclusionsThe number of hours of digital device usage increased during lockdown. Over 70% of children had CVS, whose associated factors, including hours of digital device usage, hours of online learning, ergonomics and refractive errors, should be adjusted to decrease the risk of acquiring this condition. Online learning will remain, along with CVS, after this pandemic, and we hope our research will be taken into account in remodelling our education system accordingly.

Indexed as

COVID-19Education, DistanceRefractive ErrorsAdolescentChildCommunicable Disease ControlComputersCross-Sectional StudiesHumansPandemicsStudentsSurveys and QuestionnairesSyndromeAdolescent HealthCOVID-19EpidemiologyInformation TechnologyOphthalmology

Identifiers

PMID36053639
PMCPMC9184992
OpenAlexW4281775003

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.