FACTORS ASSOCIATED WITH MYOPIA AMONG SECONDARY SCHOOL STUDENTS IN HOANG MAI TOWN, NGHE AN PROVINCE (2020)
Main Article Content
Abstract
Objectives: Untreated myopia is the leading cause of vision impairment in children. The study was
conducted in order to determine the prevalence and some factors associated with myopia in secondary
school students in Hoang Mai town, Nghe An province.
Methods: The study employed descriptive analytical research method with the study subjects of
secondary school students in Hoang Mai town, Nghe An province.
Results: The prevalence of myopia in secondary school students in Hoang Mai town was 14.2%,
in which grade 8 and grade 9 students were at a higher risk of myopia than grade 6 with OR = 1.7
(95%CI:1.2–2.5) and OR = 1.8 times (95%CI:1,2–2.6). Factors associated with myopia included
near vision distance < 30 cm, with OR = 5.2, 95%CI: 3.5 – 7.9, p < 0.01; eye rest after 30 minutes of
continuous near vision, with OR = 1.6, 95%CI: 1.1-2.5, p < 0.05; outdoor activity time < 14 hours/1
week (OR= 1.77, 95%CI: 1.15 – 3.9, p < 0.05) and reading and writing at home ≥ 21 hours/1 week (
OR = 1.5, 95% CI: 1.1- 2.1, p < 0.01).
Conclusions: Near vision distance < 30 cm, continuous reading for 30 minutes without eye rest,
outdoor activity time < 14 hours/week, and reading and writing > 21 hours/week were factors
associated with myopia in the study subjects.
Article Details
Keywords
Myopia, secondary school students, near vision, far vision.
References
and prevention, Prog Retin Eye Res, 62: pp. 134-
14, 2018.
[2] Naidoo KS., Potential lost productivity resulting
from the global burden of myopia: systematic
review, Meta-analysis and modeling, Vol.126(3):
p. 338-346, 2019.
[3] Morgan IG., The epidemics of myopia: Aetiology
and prevention, Prog Retin Eye Res, 62: pp. 134-
149, 2018.
[4] Naidoo KS., Potential lost productivity resulting
from the global burden of myopia: systematic
review, Meta-analysis and modeling, Vol.126(3):
p. 338-346, 2019.
[5] Morgan IG, K Ohno-Matsui, SM Saw, Myopia,
The Lancet, Vol.379(9827): pp.1739-48, 2012.
[6] Holden BA, Global prevalence of myopia and
high myopia and temporal trends from 2000
through 2050. Ophthalmology. 123(5): p. 1036-
1042, 2016.
[7] Mekong Development Research Institute, Eye
Health Among School Children in Vietnam:
Prevalence of Refractive Errors, Accuracy of
School-Based Screening, and KAPs Among
Students, Parents, and School Staff, A Fred Hollows
Foundation Research Report, Hanoi, 2017.
[8] Paudel P, Prevalence of vision impairment and
refractive error in school children in Ba Ria–Vung
Tau province, Vietnam. Clinical & experimental
ophthalmology, Vol.42(3): pp.217-226, 2014.
[9] Bourne RR, "Magnitude, temporal trends, and
projections of the global prevalence of blindness
and distance and near vision impairment: a
systematic review and meta-analysis". The
Lancet Global Health, 5(9): p. e888-e897, 2017.
[10] Saxena R, "Incidence and progression of myopia
and associated factors in urban school children
in Delhi: The North India Myopia Study (NIM
Study)". PloS one, Vol.12(12), 2017.
[11] Rose KA, Outdoor activity reduces the prevalence
of myopia in children, Ophthalmology,
Vol.115(8): pp.1279-1285, 2008.
[12] He M, Effect of time spent outdoors at school
on the development of myopia among children
in China: a randomized clinical trial, JAMA
ophthalmology, Vol.314(11): p. 1142-1148, 2015.
[13] Wu PC, Myopia prevention and outdoor light
intensity in a school-based cluster randomized
trial. Ophthalmology, Vol.125(8): pp.1239-1250,
2018.
[14] Wu PC, Outdoor Activity during Class Recess
Reduces Myopia Onset and Progression in
School Children, Ophthalmology, Vol.120(5): p.
1080-1085, 2013.
[15] Mirshahi A, Myopia and level of education:
results from the Gutenberg Health Study,
Ophthalmology,Vol.121(10): p. 2047-2052, 2014.