Effect of Excisional Goniotomy with the Kahook Dual Blade (KDB) on Surgically Induced Astigmatism

Matthew Hirabayashi,1,2 Gurpal Virdi,1 Joshua King,1 Dayeong Lee,1 Van Nguyen,1,2 Jella An1,2 1School of Medicine, University of Missouri, Columbia, MO, USA; 2Mason Eye Institute, Department of Ophthalmology, University of Missouri, Columbia, MO, USACorrespondence: Jella AnMason Eye Institute, Depar...

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Autores principales:	Hirabayashi M, Virdi G, King J, Lee D, Nguyen V, An J
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	kdb astigmatism migs surgically induced astigmatism Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/bf5a48ede5f342e3b1ef913c2b55dc78
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spelling	oai:doaj.org-article:bf5a48ede5f342e3b1ef913c2b55dc782021-12-02T16:09:04ZEffect of Excisional Goniotomy with the Kahook Dual Blade (KDB) on Surgically Induced Astigmatism1177-5483https://doaj.org/article/bf5a48ede5f342e3b1ef913c2b55dc782020-12-01T00:00:00Zhttps://www.dovepress.com/effect-of-excisional-goniotomy-with-the-kahook-dual-blade-kdb-on-surgi-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Matthew Hirabayashi,1,2 Gurpal Virdi,1 Joshua King,1 Dayeong Lee,1 Van Nguyen,1,2 Jella An1,2 1School of Medicine, University of Missouri, Columbia, MO, USA; 2Mason Eye Institute, Department of Ophthalmology, University of Missouri, Columbia, MO, USACorrespondence: Jella AnMason Eye Institute, Department of Ophthalmology, University of Missouri, 3215 Wingate Court, Columbia, MO 65201, USATel +1 573-884-1311Fax +1 573-884-3330Email anja@health.missouri.eduPurpose: To determine the effect of Kahook Dual Blade goniotomy with phacoemulsification (Phaco-KDB) compared to phacoemulsification alone (Phaco) on surgically induced astigmatism (SIA).Design: Prospective study.Participants: Forty eyes of 28 patients treated with Phaco-KDB and 20 eyes of 13 patients treated with Phaco between 12/27/16 and 7/23/19 with a minimum 1 month follow-up were prospectively enrolled.Methods: Corneal astigmatism was assessed pre- and post-operatively using the simulated K (simK) values from the Pentacam Holladay report.Main Outcome Measures: SIA was compared between Phaco-KDB and Phaco groups using mean magnitude SIA, rate of ≥ 0.50 D SIA, and SIA centroids.Results: The difference in mean magnitude SIA was not statistically significant between Phaco-KDB and Phaco (mean = 0.28 D and 0.25 D, respectively, P = 0.621). The difference in the rate of ≥ 0.50 D SIA was not statistically significant between Phaco-KDB and Phaco (11.6% and 10.0%, respectively, P = 1.00). The SIA centroid for Phaco-KDB was 0.05 D @ 51° ± 0.40 D and 0.07 D @ 3° ± 0.32 D for Phaco.Conclusion: Neither the mean magnitude SIA nor the rate of astigmatic change ≥ 0.50 D was significantly different between Phaco-KDB and Phaco groups. SIA centroids between groups showed comparable and negligible effect on corneal astigmatism. KDB combined with phacoemulsification may not significantly affect SIA compared to phacoemulsification alone based on postoperative topography and is likely an astigmatically neutral procedure.Keywords: KDB, astigmatism, MIGS, surgically induced astigmatismHirabayashi MVirdi GKing JLee DNguyen VAn JDove Medical Pressarticlekdbastigmatismmigssurgically induced astigmatismOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 4297-4303 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	kdb astigmatism migs surgically induced astigmatism Ophthalmology RE1-994
spellingShingle	kdb astigmatism migs surgically induced astigmatism Ophthalmology RE1-994 Hirabayashi M Virdi G King J Lee D Nguyen V An J Effect of Excisional Goniotomy with the Kahook Dual Blade (KDB) on Surgically Induced Astigmatism
description	Matthew Hirabayashi,1,2 Gurpal Virdi,1 Joshua King,1 Dayeong Lee,1 Van Nguyen,1,2 Jella An1,2 1School of Medicine, University of Missouri, Columbia, MO, USA; 2Mason Eye Institute, Department of Ophthalmology, University of Missouri, Columbia, MO, USACorrespondence: Jella AnMason Eye Institute, Department of Ophthalmology, University of Missouri, 3215 Wingate Court, Columbia, MO 65201, USATel +1 573-884-1311Fax +1 573-884-3330Email anja@health.missouri.eduPurpose: To determine the effect of Kahook Dual Blade goniotomy with phacoemulsification (Phaco-KDB) compared to phacoemulsification alone (Phaco) on surgically induced astigmatism (SIA).Design: Prospective study.Participants: Forty eyes of 28 patients treated with Phaco-KDB and 20 eyes of 13 patients treated with Phaco between 12/27/16 and 7/23/19 with a minimum 1 month follow-up were prospectively enrolled.Methods: Corneal astigmatism was assessed pre- and post-operatively using the simulated K (simK) values from the Pentacam Holladay report.Main Outcome Measures: SIA was compared between Phaco-KDB and Phaco groups using mean magnitude SIA, rate of ≥ 0.50 D SIA, and SIA centroids.Results: The difference in mean magnitude SIA was not statistically significant between Phaco-KDB and Phaco (mean = 0.28 D and 0.25 D, respectively, P = 0.621). The difference in the rate of ≥ 0.50 D SIA was not statistically significant between Phaco-KDB and Phaco (11.6% and 10.0%, respectively, P = 1.00). The SIA centroid for Phaco-KDB was 0.05 D @ 51° ± 0.40 D and 0.07 D @ 3° ± 0.32 D for Phaco.Conclusion: Neither the mean magnitude SIA nor the rate of astigmatic change ≥ 0.50 D was significantly different between Phaco-KDB and Phaco groups. SIA centroids between groups showed comparable and negligible effect on corneal astigmatism. KDB combined with phacoemulsification may not significantly affect SIA compared to phacoemulsification alone based on postoperative topography and is likely an astigmatically neutral procedure.Keywords: KDB, astigmatism, MIGS, surgically induced astigmatism
format	article
author	Hirabayashi M Virdi G King J Lee D Nguyen V An J
author_facet	Hirabayashi M Virdi G King J Lee D Nguyen V An J
author_sort	Hirabayashi M
title	Effect of Excisional Goniotomy with the Kahook Dual Blade (KDB) on Surgically Induced Astigmatism
title_short	Effect of Excisional Goniotomy with the Kahook Dual Blade (KDB) on Surgically Induced Astigmatism
title_full	Effect of Excisional Goniotomy with the Kahook Dual Blade (KDB) on Surgically Induced Astigmatism
title_fullStr	Effect of Excisional Goniotomy with the Kahook Dual Blade (KDB) on Surgically Induced Astigmatism
title_full_unstemmed	Effect of Excisional Goniotomy with the Kahook Dual Blade (KDB) on Surgically Induced Astigmatism
title_sort	effect of excisional goniotomy with the kahook dual blade (kdb) on surgically induced astigmatism
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/bf5a48ede5f342e3b1ef913c2b55dc78
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Effect of Excisional Goniotomy with the Kahook Dual Blade (KDB) on Surgically Induced Astigmatism

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