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Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China

PURPOSE: To examine the magnitude, orientation, and age-related changes of corneal astigmatism of the eyes before cataract surgery. Setting. Hebei Eye Hospital, Hebei, China. DESIGN: A clinical-based retrospective study. RESULTS: The study consisted of 5662 eyes of 5662 consecutive cataract surgery...

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Autores principales: Wu, Zhizhong, Liu, Caijuan, Chen, Zhimin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7542495/
https://www.ncbi.nlm.nih.gov/pubmed/33062314
http://dx.doi.org/10.1155/2020/6385098
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author Wu, Zhizhong
Liu, Caijuan
Chen, Zhimin
author_facet Wu, Zhizhong
Liu, Caijuan
Chen, Zhimin
author_sort Wu, Zhizhong
collection PubMed
description PURPOSE: To examine the magnitude, orientation, and age-related changes of corneal astigmatism of the eyes before cataract surgery. Setting. Hebei Eye Hospital, Hebei, China. DESIGN: A clinical-based retrospective study. RESULTS: The study consisted of 5662 eyes of 5662 consecutive cataract surgery patients with a mean age of 68.26 ± 10.39 (mean ± standard deviation (SD)) years (range 40 to 97 years), and 59.86% of the patients were women. Mean corneal astigmatism was 0.98 ± 0.76 diopter (D) (range 0.00–9.61 D). Corneal astigmatism of 0.50–0.99 D was the most common range of values (30.08%), followed by 1.00–1.49 D (22.15%), ≤0.50 D (21.21%), and 1.50–1.99 D (10.28%). There was a strong U-shaped relation between corneal astigmatism and age (p for nonlinearity <.01). With the increase of age, the astigmatism axis gradually changes from with-the-rule (WTR) to against-the-rule (ATR). Moreover, in young patients with age below 65 years, WTR astigmatism was negatively correlated with age, while ATR was positively correlated with age (r = −0.11, p=.001; r = 0.10, p=.010, respectively). However, in the old patients with age above and equal to 65 years, all types of astigmatism were positively correlated with age. CONCLUSION: This study may provide valuable and practical information to surgeons when selecting the appropriate surgical method and toric intraocular lens (IOLs).
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spelling pubmed-75424952020-10-13 Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China Wu, Zhizhong Liu, Caijuan Chen, Zhimin J Ophthalmol Research Article PURPOSE: To examine the magnitude, orientation, and age-related changes of corneal astigmatism of the eyes before cataract surgery. Setting. Hebei Eye Hospital, Hebei, China. DESIGN: A clinical-based retrospective study. RESULTS: The study consisted of 5662 eyes of 5662 consecutive cataract surgery patients with a mean age of 68.26 ± 10.39 (mean ± standard deviation (SD)) years (range 40 to 97 years), and 59.86% of the patients were women. Mean corneal astigmatism was 0.98 ± 0.76 diopter (D) (range 0.00–9.61 D). Corneal astigmatism of 0.50–0.99 D was the most common range of values (30.08%), followed by 1.00–1.49 D (22.15%), ≤0.50 D (21.21%), and 1.50–1.99 D (10.28%). There was a strong U-shaped relation between corneal astigmatism and age (p for nonlinearity <.01). With the increase of age, the astigmatism axis gradually changes from with-the-rule (WTR) to against-the-rule (ATR). Moreover, in young patients with age below 65 years, WTR astigmatism was negatively correlated with age, while ATR was positively correlated with age (r = −0.11, p=.001; r = 0.10, p=.010, respectively). However, in the old patients with age above and equal to 65 years, all types of astigmatism were positively correlated with age. CONCLUSION: This study may provide valuable and practical information to surgeons when selecting the appropriate surgical method and toric intraocular lens (IOLs). Hindawi 2020-09-29 /pmc/articles/PMC7542495/ /pubmed/33062314 http://dx.doi.org/10.1155/2020/6385098 Text en Copyright © 2020 Zhizhong Wu et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Wu, Zhizhong
Liu, Caijuan
Chen, Zhimin
Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China
title Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China
title_full Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China
title_fullStr Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China
title_full_unstemmed Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China
title_short Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China
title_sort prevalence and age-related changes of corneal astigmatism in patients undergoing cataract surgery in northern china
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7542495/
https://www.ncbi.nlm.nih.gov/pubmed/33062314
http://dx.doi.org/10.1155/2020/6385098
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