Distribution and internal correlations of corneal astigmatism in cataract patients

Abstract The aim of the study is to explore the distribution patterns and internal correlations of the morphological parameters of the cornea in patients with age-related cataract. The Pentacam HR was used to measure anterior corneal astigmatism (ACA), posterior corneal astigmatism (PCA), total corn...

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Autores principales:	Yuanfeng Jiang, Ying Qin, Shaochong Bu, Hong Zhang, Xiaomin Zhang, Fang Tian
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f6be15773fb14e2ba62604c1e28915ac
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spelling	oai:doaj.org-article:f6be15773fb14e2ba62604c1e28915ac2021-12-02T17:51:06ZDistribution and internal correlations of corneal astigmatism in cataract patients10.1038/s41598-021-91028-22045-2322https://doaj.org/article/f6be15773fb14e2ba62604c1e28915ac2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91028-2https://doaj.org/toc/2045-2322Abstract The aim of the study is to explore the distribution patterns and internal correlations of the morphological parameters of the cornea in patients with age-related cataract. The Pentacam HR was used to measure anterior corneal astigmatism (ACA), posterior corneal astigmatism (PCA), total corneal astigmatism (TCA) and keratometric corneal astigmatism (KCA). With age, the proportion of with-the-rule (WTR) ACA decreased from 65.31% to 23.63%, while the against-the-rule (ATR) ACA increased from 26.53% to 56.20%. PCA exceeded 0.50 D in 9.14% of eyes, while 76.35% of them were ATR. The magnitude of ACA was positively correlated with PCA in the whole sample, with a more significant correlation in WTR eyes (sr = 0.349, P < 0.001). The vector summation effect of PCA to ACA changed from compensation to augmentation with aging. In 57.53% of WTR eyes, KCA was overestimated by an average of 0.21 ± 0.17 D, while it was underestimated by 0.38 ± 0.27 D in 87.62% of ATR eyes. In conclusion, among age-related cataract patients, ACA and TCA gradually shifted from WTR to ATR with aging, while most PCA remained as ATR. Ignoring the age-related changes and real PCA might cause overestimation of WTR astigmatism and underestimation of ATR astigmatism.Yuanfeng JiangYing QinShaochong BuHong ZhangXiaomin ZhangFang TianNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yuanfeng Jiang Ying Qin Shaochong Bu Hong Zhang Xiaomin Zhang Fang Tian Distribution and internal correlations of corneal astigmatism in cataract patients
description	Abstract The aim of the study is to explore the distribution patterns and internal correlations of the morphological parameters of the cornea in patients with age-related cataract. The Pentacam HR was used to measure anterior corneal astigmatism (ACA), posterior corneal astigmatism (PCA), total corneal astigmatism (TCA) and keratometric corneal astigmatism (KCA). With age, the proportion of with-the-rule (WTR) ACA decreased from 65.31% to 23.63%, while the against-the-rule (ATR) ACA increased from 26.53% to 56.20%. PCA exceeded 0.50 D in 9.14% of eyes, while 76.35% of them were ATR. The magnitude of ACA was positively correlated with PCA in the whole sample, with a more significant correlation in WTR eyes (sr = 0.349, P < 0.001). The vector summation effect of PCA to ACA changed from compensation to augmentation with aging. In 57.53% of WTR eyes, KCA was overestimated by an average of 0.21 ± 0.17 D, while it was underestimated by 0.38 ± 0.27 D in 87.62% of ATR eyes. In conclusion, among age-related cataract patients, ACA and TCA gradually shifted from WTR to ATR with aging, while most PCA remained as ATR. Ignoring the age-related changes and real PCA might cause overestimation of WTR astigmatism and underestimation of ATR astigmatism.
format	article
author	Yuanfeng Jiang Ying Qin Shaochong Bu Hong Zhang Xiaomin Zhang Fang Tian
author_facet	Yuanfeng Jiang Ying Qin Shaochong Bu Hong Zhang Xiaomin Zhang Fang Tian
author_sort	Yuanfeng Jiang
title	Distribution and internal correlations of corneal astigmatism in cataract patients
title_short	Distribution and internal correlations of corneal astigmatism in cataract patients
title_full	Distribution and internal correlations of corneal astigmatism in cataract patients
title_fullStr	Distribution and internal correlations of corneal astigmatism in cataract patients
title_full_unstemmed	Distribution and internal correlations of corneal astigmatism in cataract patients
title_sort	distribution and internal correlations of corneal astigmatism in cataract patients
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f6be15773fb14e2ba62604c1e28915ac
work_keys_str_mv	AT yuanfengjiang distributionandinternalcorrelationsofcornealastigmatismincataractpatients AT yingqin distributionandinternalcorrelationsofcornealastigmatismincataractpatients AT shaochongbu distributionandinternalcorrelationsofcornealastigmatismincataractpatients AT hongzhang distributionandinternalcorrelationsofcornealastigmatismincataractpatients AT xiaominzhang distributionandinternalcorrelationsofcornealastigmatismincataractpatients AT fangtian distributionandinternalcorrelationsofcornealastigmatismincataractpatients
_version_	1718379325146791936

Distribution and internal correlations of corneal astigmatism in cataract patients

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