A Multicenter Study of the Correlations of Anterior and Posterior Corneal Parameters in Chinese Myopic Patients
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Yijun Hu, Yanfang Wang, Shanqing Zhu, Lu Xiong, Xuejun Fang, Jin Zhou, Qingsong Zhang, Xiaohua Lei, Yanbin Li, Wenhua Huang, Zheng Wang
2020
Abstract
<jats:title>Abstract</jats:title>
In this observational cross-sectional study consisting of 8365 Chinese myopic patients from five different ophthalmic centers, we investigated the correlations between anterior and posterior corneal parameters. Strongly negative anterior-posterior correlations of the mean corneal curvature were observed, with similar correlation coefficients in all myopic groups (<jats:italic>R</jats:italic>: -0.85 to -0.88). The anterior-posterior correlations of corneal astigmatism (<jats:italic>R</jats:italic>: 0.65 to 0.75), eccentricity (<jats:italic>R</jats:italic>: 0.27 to 0.38) and asphericity (<jats:italic>R</jats:italic>: 0.29 to 0.41) were all positive, with slightly different correlation coefficients between the myopic groups. The anterior-posterior correlations of mean corneal curvature were strongly negative with similar correlation coefficients in all quantile groups of six corneal and anterior chamber parameters (<jats:italic>R</jats:italic>: -0.84 to -0.91), except Sim Km (<jats:italic>R</jats:italic>: -0.36 to -0.64). The anterior-posterior correlations of corneal astigmatism were all positive with slightly different correlation coefficients between the quantile groups of SimKm (<jats:italic>R</jats:italic>: 0.66 to 0.74). The anterior-posterior correlations of corneal eccentricity (<jats:italic>R</jats:italic>: 0.30 to 0.44) and asphericity (<jats:italic>R</jats:italic>: 0.33 to 0.45) were positive and slightly different between the quantile groups of SimKm, pachy apex and corneal volume. In conclusion, anterior-posterior correlations of corneal curvature, astigmatism, eccentricity and asphericity can be affected by the severity of myopia and some other corneal parameters.
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Date 2020-11-24
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