TỶ LỆ CẬN THỊ VÀ MỘT SỐ YẾU TỐ LIÊN QUAN ĐẾN TỶ LỆ CẬN THỊ Ở HỌC SINH TIỂU HỌC TẠI THÀNH PHỐ VINH TỈNH NGHỆ AN

Abstract

Objectives: Determine the rate of myopia and evaluate some factors related to the rate of myopia in elementary school students in Vinh city, Nghe An province. Subjects and methods: Cross-sectional descriptive study, on 3161 elementary school students (aged 6-10) at primary schools in Vinh City - Nghe An from August 2022 to the end of May 2023. Results: The  rate of myopia in elementary school students is 31.3%. Mild myopia (≥ – 3.0D) accounts for 61.2% and bilateral myopia accounts for 91.0%; There are 23.7% of myopia elementary school students who do not wear glasses and 27.2% of students wear glasses with the wrong degree in one or both eyes. The lowest myopia rate in grade 1 students (6 years old) is 22.7% and gradually increases in higher grades, the highest in grade 5 students (10 years old) is 37.3%, the difference is statistically significant. There is a statistically significant relationship between the rate of myopia and family factors; Students whose parents are both myopic have the highest rate of myopia (39.7 %); Students whose siblings are myopia have a higher rate of myopia than other students. The myopia rate was lowest in the group with near vision for less than 2 hours and gradually increased with near vision time, highest in the group with near vision time of over 6 hours. There is no relationship between the rate of myopia with gender, ethnicity and outdoor activity time of students in our study