Impact of the anterior-posterior corneal radius ratio on intraocular lens power calculation errors

Asato Hasegawa,1 Takashi Kojima,2 Mana Yamamoto,1 Yukihito Kato,3 Akeno Tamaoki,1,4 Kazuo Ichikawa3 1Department of Ophthalmology, Japan Community Healthcare Organization Chukyo Hospital, Nagoya, Japan; 2Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan; 3Department of Op...

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Autores principales:	Hasegawa A, Kojima T, Yamamoto M, Kato Y, Tamaoki A, Ichikawa K
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2018
Materias:	Cataract surgery anterior-posterior corneal radius ratio intraocular lens power calculation Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/2a89b7b4c9414baba1d4dd05fa1fb8d4
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spelling	oai:doaj.org-article:2a89b7b4c9414baba1d4dd05fa1fb8d42021-12-02T08:47:41ZImpact of the anterior-posterior corneal radius ratio on intraocular lens power calculation errors1177-5483https://doaj.org/article/2a89b7b4c9414baba1d4dd05fa1fb8d42018-08-01T00:00:00Zhttps://www.dovepress.com/impact-of-the-anterior-posterior-corneal-radius-ratio-on-intraocular-l-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Asato Hasegawa,1 Takashi Kojima,2 Mana Yamamoto,1 Yukihito Kato,3 Akeno Tamaoki,1,4 Kazuo Ichikawa3 1Department of Ophthalmology, Japan Community Healthcare Organization Chukyo Hospital, Nagoya, Japan; 2Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan; 3Department of Ophthalmology, Chukyo Eye Clinic, Nagoya, Japan; 4Department of Mathematics and System Development, Shinshu University Interdisciplinary Graduate School of Science and Technology, Nagano, Japan Purpose: To evaluate the distribution of the anterior–posterior corneal radius ratio (AP ratio; anterior corneal radius/posterior corneal radius) in patients before cataract surgery, and investigate which parameters can affect this ratio. We also investigated the impact of the AP ratio on the intraocular lens (IOL) power calculation error in cataract surgery. Method: A total of 501 eyes of 501 consecutive patients who had no history of corneal diseases and had undergone cataract surgery were enrolled in this study. The patients’ AP ratio was measured before surgery using anterior segment optical coherence tomography; using these data, we evaluated the correlation between the AP ratio and various parameters that can affect the corneal radius. For subgroup analyses, we investigated the correlation between the AP ratio and IOL power calculation error in 181 eyes of 181 patients. Stepwise multiple regression analysis was performed with the IOL power calculation errors of the SRK/T, Haigis, Holladay 1, and Hoffer Q formulas as the dependent variables and various parameters that can affect the postoperative IOL power calculation error as the independent variables. Results: The mean AP ratio was 1.19±0.02, and it weakly correlated with corneal thickness, horizontal corneal diameter, and posterior corneal radius. The correlations between the AP ratio and IOL power calculation errors in the 4 calculation formulas were not statistically significant. Stepwise multiple regression analysis could not detect any significant parameters affecting this ratio. Conclusion: The AP ratio has no major influence on IOL power calculation error in patients with any history of corneal disease. Keywords: cataract surgery, anterior-posterior corneal radius ratio, intraocular lens power calculationHasegawa AKojima TYamamoto MKato YTamaoki AIchikawa KDove Medical PressarticleCataract surgeryanterior-posterior corneal radius ratiointraocular lens power calculationOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 12, Pp 1549-1558 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cataract surgery anterior-posterior corneal radius ratio intraocular lens power calculation Ophthalmology RE1-994
spellingShingle	Cataract surgery anterior-posterior corneal radius ratio intraocular lens power calculation Ophthalmology RE1-994 Hasegawa A Kojima T Yamamoto M Kato Y Tamaoki A Ichikawa K Impact of the anterior-posterior corneal radius ratio on intraocular lens power calculation errors
description	Asato Hasegawa,1 Takashi Kojima,2 Mana Yamamoto,1 Yukihito Kato,3 Akeno Tamaoki,1,4 Kazuo Ichikawa3 1Department of Ophthalmology, Japan Community Healthcare Organization Chukyo Hospital, Nagoya, Japan; 2Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan; 3Department of Ophthalmology, Chukyo Eye Clinic, Nagoya, Japan; 4Department of Mathematics and System Development, Shinshu University Interdisciplinary Graduate School of Science and Technology, Nagano, Japan Purpose: To evaluate the distribution of the anterior–posterior corneal radius ratio (AP ratio; anterior corneal radius/posterior corneal radius) in patients before cataract surgery, and investigate which parameters can affect this ratio. We also investigated the impact of the AP ratio on the intraocular lens (IOL) power calculation error in cataract surgery. Method: A total of 501 eyes of 501 consecutive patients who had no history of corneal diseases and had undergone cataract surgery were enrolled in this study. The patients’ AP ratio was measured before surgery using anterior segment optical coherence tomography; using these data, we evaluated the correlation between the AP ratio and various parameters that can affect the corneal radius. For subgroup analyses, we investigated the correlation between the AP ratio and IOL power calculation error in 181 eyes of 181 patients. Stepwise multiple regression analysis was performed with the IOL power calculation errors of the SRK/T, Haigis, Holladay 1, and Hoffer Q formulas as the dependent variables and various parameters that can affect the postoperative IOL power calculation error as the independent variables. Results: The mean AP ratio was 1.19±0.02, and it weakly correlated with corneal thickness, horizontal corneal diameter, and posterior corneal radius. The correlations between the AP ratio and IOL power calculation errors in the 4 calculation formulas were not statistically significant. Stepwise multiple regression analysis could not detect any significant parameters affecting this ratio. Conclusion: The AP ratio has no major influence on IOL power calculation error in patients with any history of corneal disease. Keywords: cataract surgery, anterior-posterior corneal radius ratio, intraocular lens power calculation
format	article
author	Hasegawa A Kojima T Yamamoto M Kato Y Tamaoki A Ichikawa K
author_facet	Hasegawa A Kojima T Yamamoto M Kato Y Tamaoki A Ichikawa K
author_sort	Hasegawa A
title	Impact of the anterior-posterior corneal radius ratio on intraocular lens power calculation errors
title_short	Impact of the anterior-posterior corneal radius ratio on intraocular lens power calculation errors
title_full	Impact of the anterior-posterior corneal radius ratio on intraocular lens power calculation errors
title_fullStr	Impact of the anterior-posterior corneal radius ratio on intraocular lens power calculation errors
title_full_unstemmed	Impact of the anterior-posterior corneal radius ratio on intraocular lens power calculation errors
title_sort	impact of the anterior-posterior corneal radius ratio on intraocular lens power calculation errors
publisher	Dove Medical Press
publishDate	2018
url	https://doaj.org/article/2a89b7b4c9414baba1d4dd05fa1fb8d4
work_keys_str_mv	AT hasegawaa impactoftheanteriorposteriorcornealradiusratioonintraocularlenspowercalculationerrors AT kojimat impactoftheanteriorposteriorcornealradiusratioonintraocularlenspowercalculationerrors AT yamamotom impactoftheanteriorposteriorcornealradiusratioonintraocularlenspowercalculationerrors AT katoy impactoftheanteriorposteriorcornealradiusratioonintraocularlenspowercalculationerrors AT tamaokia impactoftheanteriorposteriorcornealradiusratioonintraocularlenspowercalculationerrors AT ichikawak impactoftheanteriorposteriorcornealradiusratioonintraocularlenspowercalculationerrors
_version_	1718398354651611136

Impact of the anterior-posterior corneal radius ratio on intraocular lens power calculation errors

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