Ocular biometric parameters among primary and secondary school students of Naxi,Bai and Han ethnicity in Yunnan Province
10.13389/j.cnki.rao.2024.0071
- VernacularTitle:云南纳西族、白族和汉族中小学生眼球生物学参数特征分析
- Author:
Qiang ZHANG
1
,
2
;
Litao CHANG
;
Peiqian LI
;
Jie XIAO
;
Dafeng HUANG
;
Xueni XIE
;
Jin-Jiao ZHANG
;
Zixue MA
;
Qianqian LI
;
Xiao LUO
;
Maosen CHEN
;
Ying HUANG
Author Information
1. 650500 云南省昆明市,昆明医科大学公共卫生学院
2. 650022 云南省昆明市,云南省疾病预防控制中心
- Keywords:
myopia;
students;
multiethnic;
ocular biometric parameters
- From:
Recent Advances in Ophthalmology
2024;44(5):365-369
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess ocular biometric parameters among primary and secondary school students from Naxi,Bai and Han ethnic groups in Yunnan Province.Methods The school-based study was conducted in October 2020.A total of 724 second-,third-and seventh-graders were selected from Dali and Lijiang,where Bai and Naxi ethnic groups inhabit,using a stratified cluster sampling method to receive questionnaire surveys and eye examinations.Non-cycloplegic spherical equivalent(SE),axial length(AL),anterior chamber depth(ACD),corneal radius of curvature(CR),central corneal thickness(CCT),white-to-white(WTW)distance,and the AL/CR ratio were measured.Covariance analysis was used to examine the differences in SE and ocular biometric parameters in terms of ethnicity,sex and grade,while Pearson correlation was used to test the associations among the said indicators.Results There were no significant differences in daily outdoor time,screen time and sleep time among the three ethnic groups regardless of grades(all P＞0.05).The mean CCT of Naxi students was lower than that of Han and Bai students[grade 2 and grade 3:(542.48±39.76)μm vs.(553.81±31.83)μm and(559.27±32.79)μm;grade7:(538.86±34.91)μm vs.(547.41±33.55)μm and(548.26± 32.98)μm,all P＜0.05],while no significant differences were found in the other ocular biometric parameters among the three ethnic groups(all P＞0.05).Among the seventh-graders,the SE,AL and AL/CR ratio of Naxi students were signifi-cantly different from those of Han and Bai students(all P＜0.05).The AL,CR,ACD,CCT,WTW distance,and mean SE were lower in girls than in boys(all P＜0.05).Compared with grade 2 and grade 3,students of grade 7 had longer AL,deeper ACD and thinner CCT(all P＜0.05),while no significant differences were found in CR and WTW distance(all P＞0.05).Correlation analysis showed that the AL/CR ratio was highly correlated with SE(r=-0.78,P＜0.05).Conclu-sion Multiethnic primary and secondary school students may face similar environmental risks.Yet,disparities in ocular biometric parameters caused by ethnicity,sex and age should be noted.
