Articles Vol. 63 No. 6 (2022) 09/11/2022

FACTORS ASSOCIATED WITH MYOPIA AMONG SECONDARY SCHOOL STUDENTS IN HOANG MAI TOWN, NGHE AN PROVINCE (2020)

Tran Tat Thang1,2, Nguyen Quang Thieu3,4, Que Anh Tram5,6
1 Nghe An Eye Hospital
2 Bệnh viện Mắt Nghệ An
3 National Institute of Malariology, Parasitology and Entomology
4 Viện Sốt rét - Ký sinh trùng - Côn trùng Trung ương
5 Nghe An Friendship General Hospital
6 Bệnh viện Hữu nghị Đa khoa Nghệ An
Corresponding author: thangmatna@gmail.com
DOI: 10.52163/yhc.v63i6.456
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Keywords
Myopia, secondary school students, near vision, far vision.
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.

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