Analysis on myopia status of primary and secondary school students and influencing factors in Weihai city,Shandong province in 2021
Objective To analyze the visual acuity status of primary and secondary school students in Weihai city,Shan-dong province in 2021 and their influencing factors,so as to provide a theoretical basis for the prevention and control of myopia.Methods A total of 18 schools in Weihai city were selected by using a multistage cluster sampling in 2021,and around 4 555 students participated in this survey.Visual acuity examination and questionnaire survey were conducted.The myopia detection rate was calculated,the x2 test was used to analyze the differences in myopia rates among primary and secondary school students with different characteristics,and multifactorial logistic regression was used to analyze the fac-tors affecting myopia.Results The myopia rate of primary and secondary school students in Weihai city was 81.58％(3 716/4 555).The myopia rate in primary school,middle school and high school was 64.20％(970/1 511),87.17％(1 359/1 559)and 93.40％(1 387/1 485),respectively.With the grade growth,the prevalence of myopia showed an up-ward trend(x2trend=465.0,P＜0.001).The myopia rates for girls and boys were 84.13％(1 892/2 249)and 79.10％(1 824/2 306),their differences was statistically significant(x2=19.4,P＜0.001).The myopia rates of students in ur-ban and suburban areas were 80.01％(2 041/2 551)and 83.58％(1 675/2 004),respectively,with statistically significant difference(x2=9.32,P＜0.001).Seat exchange cycle(x2=231,P＜0.001),adjusting frequency of desks and chairs(x2=121,P＜0.001),number of eye exercises per day(x2=87.7,P＜0.001),rest place after class(x2=35.7,P＜0.001),studying time away after school(x2=13.6,P＜0.05),the duration of extracurricular cultural courses tuto-ring(x2=13.6,P＜0.05),whether limit video time or not(x2=35.3,P＜0.001),whether the reading and writing posture meets the standard or not(x2=42.1,P＜0.001),daily TV viewing time(x2=22.4,P＜0.001),whether using eyes on direct sunlight or not(x2=67.0,P＜0.001),whether turning off the lights when watching the screen in the dark or not(x2=76.1,P＜0.001),whether to lie down and crawl to read or not(x2=105,P＜0.001),video when walking or taking a car or not(x2=99.8,P＜0.001),eyes were 66 cm away from the computer or not(x2=21.1,P＜0.001),eye distance from TV 3 meters or not(x2=7.76,P＜0.05),continuous eye use time(x2=63.2,P＜0.001),outdoor activities time at daytime(x2=15.8,P＜0.001),sleeping time(x2=302,P＜0.001)and parent myopia(x2=81.0,P＜0.001)and,short-distance use of eyes had statistically significant differences in myopia rates among primary and secondary school students.Logistic regression analyze showed that county,gender(OR=1.384,95％CI:1.172-1.635,P＜0.001),location(OR=1.430,95％CI:1.187-1.723,P＜0.001),grade(primary:OR=6.654,95％CI:4.554-9.723,P＜0.001;junior middle:OR=2.048,95％CI:1.426-2.941,P＜0.001),parent myopia(paternal myo-pia only:OR=0.535,95％CI:=0.423-0.675,P＜0.001;maternal myopia only:OR=0.598,95％CI:0.479-0.746,P＜0.001;parental myopia:OR=0.377,95％CI:0.298-0.0.477,P＜0.001)and sleeping time(less than 8 h:OR=0.574,95％CI:0.409-0.804,P＜0.001;8-10 h:OR=0.764,95％CI:0.619-0.943,P＜0.001)were influen-cing factors for myopia in students.Conclusion The myopia rate of primary and secondary school students in this area was at a high level in 2021.Different regions,grades,genders,sleep time,and parental myopia status were influencing fac-tors for myopia in primary and secondary school students.
Elementary and middle school studentsMyopiaVisual acuitySchool healthInfluencing factors
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