Function and Disability Journal
Function and Disability Journal
Func Disabil J
Medical Sciences
http://fdj.iums.ac.ir
1
admin
2588-6304
2588-6304
8
10.30699/fdisj
14
13
en
jalali
1397
11
1
gregorian
2019
2
1
2
1
online
1
fulltext
en
A comparison of central and peripheral refractions between 4-6 years old Children user and non-user of smartphones and/or other electronic screens
بینایی سنجی
Optometry
پژوهشي
Research
<strong>Background: </strong>The purpose of the present study is to compare central and peripheral refraction among children of 4-6 year-old user and non-user of smartphones and /or other electronic screens.<br>
<strong>Methods:</strong> In this cross-sectional study, 106 children aged 4-6 years were enrolled in two groups of user (56 children: 34 boys and 22 girls) and non-user (50 children: 30 girls and 20 boys) of smartphones and /or other electronic screens.<br>
The user group used smartphones and /or other electronic screens for 1-3 hours a day for at least one year and non-user group either did not use these screens or used less than half an hour occasionally and not every day.<br>
All children had visual acuity of at least 20/20 with or without correction and showed no other ocular or systemic diseases. Both groups were evaluated for central refraction and peripheral refraction up to 20° eccentricity in nasal and temporal directions and up to 10° eccentricity in superior direction using the Shin-Nippon K5001 autorefractometer. The outcome measures were compared with SPSS statistical software.<br>
<strong>Results:</strong> The findings showed no statistically significant difference in terms of central and peripheral refraction in superior, nasal and temporal eccentricities between the user and non-user groups (p>0.05).<br>
<strong> Conclusion:</strong> According to the results of the present study, it concludes that using smartphones and/or other electronic screens for 1-3 hours a day shows no effect on central and peripheral refraction in children with low range of refractive errors.
Smartphone, Electronic screens, Peripheral refraction, Central refraction
105
110
http://fdj.iums.ac.ir/browse.php?a_code=A-10-119-1&slc_lang=en&sid=1
Seyede Masoumeh
Hosseini
hosseini2222@yahoo.com
10031947532846001602
10031947532846001602
No
MSc Student of Optometry, Department of Optometry, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
Ali
mirzajan
mirzajani.a@iums.ac.ir
10031947532846001603
10031947532846001603
Yes
Associate Professor of Optometry, Department of Optometry, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
Ebrahim
Jafarzadehpour
Jafarzadehpour.e@iums.ac.ir
10031947532846001604
10031947532846001604
No
Professor of Optometry and Vision Sciences, Department of Optometry, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran,
Jamileh
Abolghasemi
Abolghasemi1347@yahoo.com
10031947532846001605
10031947532846001605
No
Associate Professor of Biostatistics, Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran,