Comparison of surgically induced astigmatism following different glaucoma operations

Masaki Tanito, Yukari Matsuzaki, Yoshifumi Ikeda, Etsuko Fujihara Division of Ophthalmology, Matsue Red Cross Hospital, Matsue, Japan Aim: To compare surgically induced astigmatism (SIA) among glaucomatous eyes treated with trabeculectomy (LEC), EX-PRESS® shunt (EXP), ab externo trabeculot...

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Autores principales:	Tanito M, Matsuzaki Y, Ikeda Y, Fujihara E
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2017
Materias:	Surgically induced astigmatism (SIA) trabeculectomy EX-PRESS shunt ab externo trabeculotomy microhook ab interno trabeculotomy minimally invasive glaucoma surgery (MIGS). Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/bafb30078d974cb898d8179b2754d9c0
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spelling	oai:doaj.org-article:bafb30078d974cb898d8179b2754d9c02021-12-02T00:35:49ZComparison of surgically induced astigmatism following different glaucoma operations1177-5483https://doaj.org/article/bafb30078d974cb898d8179b2754d9c02017-11-01T00:00:00Zhttps://www.dovepress.com/comparison-of-surgically-induced-astigmatism-following-different-glauc-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Masaki Tanito, Yukari Matsuzaki, Yoshifumi Ikeda, Etsuko Fujihara Division of Ophthalmology, Matsue Red Cross Hospital, Matsue, Japan Aim: To compare surgically induced astigmatism (SIA) among glaucomatous eyes treated with trabeculectomy (LEC), EX-PRESS® shunt (EXP), ab externo trabeculotomy (exLOT), or microhook ab interno trabeculotomy (µLOT).Subjects and methods: Eighty right eyes of 80 subjects who underwent LEC (n=20), EXP (n=20), exLOT (n=20), or µLOT (n=20) were included. The dataset including the best-corrected visual acuity (BCVA), intraocular pressure (IOP), and keratometry recordings preoperatively and 3 months postoperatively was collected by chart review. The means of the vector magnitude, vector meridian, and arithmetic magnitude of the preoperative and postoperative astigmatism and SIA were calculated. The correlations among the SIA magnitude, postoperative BCVA, and IOP were assessed.Results: The mean astigmatic arithmetic magnitudes did not differ significantly (P=0.0732) preoperatively among the four groups, but the magnitude was significantly (P=0.0002) greater in the LEC group than the other groups postoperatively. The mean SIA vectors were calculated to be 1.01 D at 56°, 0.62 D at 74°, 0.23 D at 112°, and 0.12 D at 97° for the LEC, EXP, exLOT, and µLOT groups, respectively. The mean SIA arithmetic magnitudes were significantly (P<0.0001) greater in the LEC group than the other groups. Three months postoperatively, the SIA magnitude was correlated positively with the logarithm of the minimum angle of resolution (logMAR) BCVA (r=0.3538) and negatively with the IOP (r=-0.3265); the logMAR BCVA was correlated negatively with the IOP (r=-0.3105).Conclusion: EXP, exLOT, and µLOT induce less corneal astigmatism than LEC in the early postoperative period. Keywords: SIA, trabeculectomy, EX-PRESS shunt, ab externo trabeculotomy, microhook ab interno trabeculotomy, MIGS Tanito MMatsuzaki YIkeda YFujihara EDove Medical PressarticleSurgically induced astigmatism (SIA)trabeculectomyEX-PRESS shuntab externo trabeculotomymicrohook ab interno trabeculotomyminimally invasive glaucoma surgery (MIGS).OphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 11, Pp 2113-2120 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Surgically induced astigmatism (SIA) trabeculectomy EX-PRESS shunt ab externo trabeculotomy microhook ab interno trabeculotomy minimally invasive glaucoma surgery (MIGS). Ophthalmology RE1-994
spellingShingle	Surgically induced astigmatism (SIA) trabeculectomy EX-PRESS shunt ab externo trabeculotomy microhook ab interno trabeculotomy minimally invasive glaucoma surgery (MIGS). Ophthalmology RE1-994 Tanito M Matsuzaki Y Ikeda Y Fujihara E Comparison of surgically induced astigmatism following different glaucoma operations
description	Masaki Tanito, Yukari Matsuzaki, Yoshifumi Ikeda, Etsuko Fujihara Division of Ophthalmology, Matsue Red Cross Hospital, Matsue, Japan Aim: To compare surgically induced astigmatism (SIA) among glaucomatous eyes treated with trabeculectomy (LEC), EX-PRESS® shunt (EXP), ab externo trabeculotomy (exLOT), or microhook ab interno trabeculotomy (µLOT).Subjects and methods: Eighty right eyes of 80 subjects who underwent LEC (n=20), EXP (n=20), exLOT (n=20), or µLOT (n=20) were included. The dataset including the best-corrected visual acuity (BCVA), intraocular pressure (IOP), and keratometry recordings preoperatively and 3 months postoperatively was collected by chart review. The means of the vector magnitude, vector meridian, and arithmetic magnitude of the preoperative and postoperative astigmatism and SIA were calculated. The correlations among the SIA magnitude, postoperative BCVA, and IOP were assessed.Results: The mean astigmatic arithmetic magnitudes did not differ significantly (P=0.0732) preoperatively among the four groups, but the magnitude was significantly (P=0.0002) greater in the LEC group than the other groups postoperatively. The mean SIA vectors were calculated to be 1.01 D at 56°, 0.62 D at 74°, 0.23 D at 112°, and 0.12 D at 97° for the LEC, EXP, exLOT, and µLOT groups, respectively. The mean SIA arithmetic magnitudes were significantly (P<0.0001) greater in the LEC group than the other groups. Three months postoperatively, the SIA magnitude was correlated positively with the logarithm of the minimum angle of resolution (logMAR) BCVA (r=0.3538) and negatively with the IOP (r=-0.3265); the logMAR BCVA was correlated negatively with the IOP (r=-0.3105).Conclusion: EXP, exLOT, and µLOT induce less corneal astigmatism than LEC in the early postoperative period. Keywords: SIA, trabeculectomy, EX-PRESS shunt, ab externo trabeculotomy, microhook ab interno trabeculotomy, MIGS
format	article
author	Tanito M Matsuzaki Y Ikeda Y Fujihara E
author_facet	Tanito M Matsuzaki Y Ikeda Y Fujihara E
author_sort	Tanito M
title	Comparison of surgically induced astigmatism following different glaucoma operations
title_short	Comparison of surgically induced astigmatism following different glaucoma operations
title_full	Comparison of surgically induced astigmatism following different glaucoma operations
title_fullStr	Comparison of surgically induced astigmatism following different glaucoma operations
title_full_unstemmed	Comparison of surgically induced astigmatism following different glaucoma operations
title_sort	comparison of surgically induced astigmatism following different glaucoma operations
publisher	Dove Medical Press
publishDate	2017
url	https://doaj.org/article/bafb30078d974cb898d8179b2754d9c0
work_keys_str_mv	AT tanitom comparisonofsurgicallyinducedastigmatismfollowingdifferentglaucomaoperations AT matsuzakiy comparisonofsurgicallyinducedastigmatismfollowingdifferentglaucomaoperations AT ikeday comparisonofsurgicallyinducedastigmatismfollowingdifferentglaucomaoperations AT fujiharae comparisonofsurgicallyinducedastigmatismfollowingdifferentglaucomaoperations
_version_	1718403642951729152

Comparison of surgically induced astigmatism following different glaucoma operations

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