The role of sideport incision in astigmatism change after cataract surgery

Sofia Theodoulidou,1 Ioannis Asproudis,1 Christos Kalogeropoulos,1 Aristidis Athanasiadis,2 Miltiadis Aspiotis1 1Department of Ophthalmology, Medical School, University of Ioannina, Ioannina, Greece; 2Ophthalmology Clinic, General Hospital of Piraeus “Tzaneio”, Attiki, Greece P...

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Autores principales:	Theodoulidou S, Asproudis I, Kalogeropoulos C, Athanasiadis A, Aspiotis M
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2015
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/f6cfab576fd5476da9c22828fd46fcba
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spelling	oai:doaj.org-article:f6cfab576fd5476da9c22828fd46fcba2021-12-02T00:23:46ZThe role of sideport incision in astigmatism change after cataract surgery1177-5483https://doaj.org/article/f6cfab576fd5476da9c22828fd46fcba2015-08-01T00:00:00Zhttp://www.dovepress.com/the-role-of-sideport-incision-in-astigmatism-change-after-cataract-sur-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Sofia Theodoulidou,1 Ioannis Asproudis,1 Christos Kalogeropoulos,1 Aristidis Athanasiadis,2 Miltiadis Aspiotis1 1Department of Ophthalmology, Medical School, University of Ioannina, Ioannina, Greece; 2Ophthalmology Clinic, General Hospital of Piraeus “Tzaneio”, Attiki, Greece Purpose: To study the changes in corneal astigmatism after cataract surgery when the sideport incision is performed at a predetermined location away from the tunnel incision. Setting: General Hospital of Piraeus “Tzaneio”, Attiki, Greece. Materials and methods: A total of 333 eyes with corneal astigmatism ≤1.5 diopters (D) underwent cataract surgery. A three-step superotemporal clear corneal incision for the right eye and a superonasal clear corneal incision for the left eye (3.0 mm) was made, while the sideport incision was located at <90°, 90°–110°, and >110°. Keratometric data were measured with corneal topography EyeSys Vista 2000 pre- and postoperatively at the 1st and 6th month. Surgically induced astigmatism was calculated by vector analysis. We noted all cases in which a change >0.5 D in corneal astigmatic power occurred, as well as a change >20° in axis torque, despite axis direction. Results: After multiple logistic regression analysis was conducted, cases with >110° distance between the tunnel and sideport incision had 2.22 times (P=0.021) greater likelihood for having changed >0.5 D in astigmatic power at the 1st month and 3.45 times (P=0.031) at the 6th month postoperatively, as compared with cases with a 90°–110° distance between the tunnel and sideport incision. As for the change in the astigmatic axis, cases with <90° distance had a 4.18 times greater likelihood for having a change >20° (P<0.001) (preoperative to 1st month) as compared with cases having 90°–110° of distance. Conclusion: For surgeons that operate only from the superior position, we propose that in order to produce an incision that is as “astigmatically neutral” as possible, they should perform the sideport incision at a 90°–110° distance. Keywords: cataract surgery, astigmatism, sideport incision, tunnel incisionTheodoulidou SAsproudis IKalogeropoulos CAthanasiadis AAspiotis MDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2015, Iss default, Pp 1421-1428 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Theodoulidou S Asproudis I Kalogeropoulos C Athanasiadis A Aspiotis M The role of sideport incision in astigmatism change after cataract surgery
description	Sofia Theodoulidou,1 Ioannis Asproudis,1 Christos Kalogeropoulos,1 Aristidis Athanasiadis,2 Miltiadis Aspiotis1 1Department of Ophthalmology, Medical School, University of Ioannina, Ioannina, Greece; 2Ophthalmology Clinic, General Hospital of Piraeus “Tzaneio”, Attiki, Greece Purpose: To study the changes in corneal astigmatism after cataract surgery when the sideport incision is performed at a predetermined location away from the tunnel incision. Setting: General Hospital of Piraeus “Tzaneio”, Attiki, Greece. Materials and methods: A total of 333 eyes with corneal astigmatism ≤1.5 diopters (D) underwent cataract surgery. A three-step superotemporal clear corneal incision for the right eye and a superonasal clear corneal incision for the left eye (3.0 mm) was made, while the sideport incision was located at <90°, 90°–110°, and >110°. Keratometric data were measured with corneal topography EyeSys Vista 2000 pre- and postoperatively at the 1st and 6th month. Surgically induced astigmatism was calculated by vector analysis. We noted all cases in which a change >0.5 D in corneal astigmatic power occurred, as well as a change >20° in axis torque, despite axis direction. Results: After multiple logistic regression analysis was conducted, cases with >110° distance between the tunnel and sideport incision had 2.22 times (P=0.021) greater likelihood for having changed >0.5 D in astigmatic power at the 1st month and 3.45 times (P=0.031) at the 6th month postoperatively, as compared with cases with a 90°–110° distance between the tunnel and sideport incision. As for the change in the astigmatic axis, cases with <90° distance had a 4.18 times greater likelihood for having a change >20° (P<0.001) (preoperative to 1st month) as compared with cases having 90°–110° of distance. Conclusion: For surgeons that operate only from the superior position, we propose that in order to produce an incision that is as “astigmatically neutral” as possible, they should perform the sideport incision at a 90°–110° distance. Keywords: cataract surgery, astigmatism, sideport incision, tunnel incision
format	article
author	Theodoulidou S Asproudis I Kalogeropoulos C Athanasiadis A Aspiotis M
author_facet	Theodoulidou S Asproudis I Kalogeropoulos C Athanasiadis A Aspiotis M
author_sort	Theodoulidou S
title	The role of sideport incision in astigmatism change after cataract surgery
title_short	The role of sideport incision in astigmatism change after cataract surgery
title_full	The role of sideport incision in astigmatism change after cataract surgery
title_fullStr	The role of sideport incision in astigmatism change after cataract surgery
title_full_unstemmed	The role of sideport incision in astigmatism change after cataract surgery
title_sort	role of sideport incision in astigmatism change after cataract surgery
publisher	Dove Medical Press
publishDate	2015
url	https://doaj.org/article/f6cfab576fd5476da9c22828fd46fcba
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The role of sideport incision in astigmatism change after cataract surgery

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