Efficiency of the ratio of axial length to corneal curvature radius in the evaluation of myopia in children and adolescents
10.3980/j.issn.1672-5123.2024.8.25
- VernacularTitle:眼轴长度与角膜曲率半径比值在儿童青少年近视评估中的效能
- Author:
Wei WANG
1
;
Shengyu OU
1
Author Information
1. Department of Optometry, the Second People's Hospital of Beihai, Beihai 536000, Guangxi Zhuang Autonomous Region, China
- Publication Type:Journal Article
- Keywords:
myopia;
biological measurement;
axial length;
axial length to corneal radius of curvature(AL/CR);
children and adolescents
- From:
International Eye Science
2024;24(8):1314-1318
- CountryChina
- Language:Chinese
-
Abstract:
AIM: To evaluate the value of the ratio of axial length to corneal radius of curvature(AL/CR)in the diagnosis of myopia in children and adolescents.METHODS: The refraction and ocular biometric parameters of 2 182 cases of children and adolescents(4 364 eyes)who initially visited the optometry clinic of the Second People's Hospital of Beihai from January 2022 to December 2023 were collected and analyzed.RESULTS: The receiver operating characteristic curve(ROC curve)showed that AL/CR had a higher area under the curve(AUC=0.925, 95%CI: 0.917-0.933)in diagnosing myopia. When AL/CR was 3.053, the Youden index was the largest. As the threshold of AL/CR decreased, the sensitivity of myopia diagnosis increased, while the specificity decreased. Compared with screening myopia, the sensitivity of AL/CR=3.053 in diagnosing myopia was low, but the specificity was high, especially in the cases of hyperopia and pre-myopia.CONCLUSION: The accuracy of AL/CR in diagnosing myopia is superior to that of axial length and average corneal curvature, with higher specificity. As the threshold of AL/CR decreases, the sensitivity of diagnosing myopia increases, but the specificity decreases. In cases of hyperopia and pre-myopia, the specificity of AL/CR in diagnosing myopia is higher than that of screening myopia.
