Survey on visual acuity and refractive status of preschool children in Xining City, Qinghai Province
10.3980/j.issn.1672-5123.2022.9.35
- VernacularTitle:青海省西宁市学龄前儿童视力及屈光状态调查
- Author:
Chun-Ni YAN
1
,
2
;
Kun ZHOU
1
,
2
;
Tian LIANG
1
,
2
;
Li-Na WANG
1
,
2
;
Jin-Xin SONG
1
,
2
;
Yi-Qing LUO
1
,
2
Author Information
1. Xi'an No.1 Hospital
2. Shaanxi Institute of Ophthalmology, Xi'an 710002, Shaanxi Province, China
- Publication Type:Journal Article
- Keywords:
preschool;
children;
vision;
refractive abnormalities;
plateau
- From:
International Eye Science
2022;22(9):1592-1594
- CountryChina
- Language:Chinese
-
Abstract:
AIM:A total of 1 084 preschool children in 4 kindergartens in Xining City were surveyed on their visual acuity and refraction status to find out abnormal vision and refraction beyond the normal range. METHODS: A cross-sectional survey study. The overall sampling method was used on October 2019, a total of 1 084 preschool children aged 3-6 years were selected from a kindergarten in the east, west, south and north of Xining City. The children were checked for uncorrected distance vision and refractive status was checked by using a refractive screener.RESULTS: The detection rate of abnormal vision in preschool children in Xining City was 12.21%, and the detection rate of abnormal vision increased with the increasing age(χ2lineartrend=94.40, P<0.05), and there were differences among different age groups(χ2=293.55, P<0.05). Refractive abnormalities accounted for 6.09% of the total number of examinations. With the increasing age, the proportion of compound hyperopic astigmatism decreased(χ2lineartrend=1.79, P>0.05).CONCLUSION: The abnormal visual acuity of preschool children in Xining City gradually increases with the increasing age; The refractive state is dominated by astigmatism, among which the proportion of mixed astigmatism and pure myopia astigmatism is the highest, followed by pure hyperopic astigmatism and compound hyperopic astigmatism; With the increase of age, the diopter of compound hyperopic astigmatism gradually decreases, which is in line with the law of children's eye refractive development.
