Variations and influencing factors of distant vision of students in two Air Force youth aviation schools in Northeast China / 军事医学

ABSTRACT

Objective To analyze the variation and influencing factors of distant vision of students during the recruitment selection and medical examination in two Air Force youth aviation schools in Northeast China in order to protect the youth aviation school students against myopia and to provide reference for interventions.Methods The distant vision of students of each grade in two schools in Northeast China was observed during the recruitment selection and during 2017 medical examination,and was statistically analyzed.The influencing factors of vision were investigated and analyzed.Results There was no statistically significant difference in the distant vision constituent ratio of students in Grade One and Grade Two during the recruitment selection and 2017 medical examination (P ≥ 0.05),but the difference was statistically significant in the distant vision constituent ratio of students in Grade Three during the recruitment selection and 2017 medical examination(P ＜0.01).There was statistically significant difference in the paired variable differences of students in each grade(P ＜0.01).The Logistic analysis result showed that reading distance and eating fruits and vegetables were the two important factors that influenced the visual acuity of the students.Conclustion The distant vision gets worse in the second semester of Grade Two,and the range of visual fluctuation is large.So regular examinations of visual acuity should be conducted and feasible measures of myopia protection should be taken to preserve hight-qnality sources of students.