Transverse vs torsional ultrasound: prospective randomized contralaterally controlled study comparing two phacoemulsification-system handpieces

Kerry K Assil, Lindsay Harris, Jeannie Cecka Assil Eye Institute, Beverly Hills, CA, USA Purpose: To compare surgical efficiency and multiple early clinical outcome variables in eyes undergoing phacoemulsification using either transversal or torsional ultrasound systems.Setting: Assil Eye Institut...

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Autores principales:	Assil KK, Harris L, Cecka J
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2015
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/cc234c6e7476483885bc5b64c389d16b
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spelling	oai:doaj.org-article:cc234c6e7476483885bc5b64c389d16b2021-12-02T05:30:14ZTransverse vs torsional ultrasound: prospective randomized contralaterally controlled study comparing two phacoemulsification-system handpieces1177-5483https://doaj.org/article/cc234c6e7476483885bc5b64c389d16b2015-08-01T00:00:00Zhttp://www.dovepress.com/transverse-vs-torsional-ultrasound-prospective-randomized-contralatera-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Kerry K Assil, Lindsay Harris, Jeannie Cecka Assil Eye Institute, Beverly Hills, CA, USA Purpose: To compare surgical efficiency and multiple early clinical outcome variables in eyes undergoing phacoemulsification using either transversal or torsional ultrasound systems.Setting: Assil Eye Institute, Beverly Hills, CA, USA.Design: Prospective, randomized, clinician-masked, contralaterally controlled single-center evaluation.Patients and methods: Patients seeking cataract removal in both eyes with implantation of multifocal intraocular lenses were randomly assigned to one of two treatment rooms for phacoemulsification with either a transverse ultrasound system or torsional handpiece system. The contralateral eye was treated at a later date with the alternate device. A total of 54 eyes of 27 patients having similar degrees of cataract, astigmatism, and visual potential were included. All operative data were collected for analysis, and patients were followed for 3 months after surgery.Results: Similar visual acuity was reported at all postoperative visits between the two groups. Mean phacoemulsification time and total power required were both significantly lower with the transverse system than with the torsional technique (P<0.05 for both). Similarly, mean total balanced salt solution used was significantly less with the transverse system vs torsional (P<0.05). Postoperative safety demonstrated significantly lower endothelial cell loss at 1 day and 1 month (P<0.05) with transverse vs torsional. Macular swelling was less at 1 week, 1 month, and 3 months with transverse vs torsional, although the difference did not achieve significance (P=0.1) at any single time point. Clinically detectable corneal edema was reported less frequently at all postoperative time points with the transverse system.Conclusion: The transverse ultrasound system was found to be possibly associated with less balanced salt-solution use, less phacoemulsification time, and less power required than the torsional phaco system. Postoperative data suggested that improved phaco efficiency may translate to a better overall safety profile for the patient. Keywords: phacoemulsification, transversal, torsional, cutting efficiencyAssil KKHarris LCecka JDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2015, Iss default, Pp 1405-1411 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Assil KK Harris L Cecka J Transverse vs torsional ultrasound: prospective randomized contralaterally controlled study comparing two phacoemulsification-system handpieces
description	Kerry K Assil, Lindsay Harris, Jeannie Cecka Assil Eye Institute, Beverly Hills, CA, USA Purpose: To compare surgical efficiency and multiple early clinical outcome variables in eyes undergoing phacoemulsification using either transversal or torsional ultrasound systems.Setting: Assil Eye Institute, Beverly Hills, CA, USA.Design: Prospective, randomized, clinician-masked, contralaterally controlled single-center evaluation.Patients and methods: Patients seeking cataract removal in both eyes with implantation of multifocal intraocular lenses were randomly assigned to one of two treatment rooms for phacoemulsification with either a transverse ultrasound system or torsional handpiece system. The contralateral eye was treated at a later date with the alternate device. A total of 54 eyes of 27 patients having similar degrees of cataract, astigmatism, and visual potential were included. All operative data were collected for analysis, and patients were followed for 3 months after surgery.Results: Similar visual acuity was reported at all postoperative visits between the two groups. Mean phacoemulsification time and total power required were both significantly lower with the transverse system than with the torsional technique (P<0.05 for both). Similarly, mean total balanced salt solution used was significantly less with the transverse system vs torsional (P<0.05). Postoperative safety demonstrated significantly lower endothelial cell loss at 1 day and 1 month (P<0.05) with transverse vs torsional. Macular swelling was less at 1 week, 1 month, and 3 months with transverse vs torsional, although the difference did not achieve significance (P=0.1) at any single time point. Clinically detectable corneal edema was reported less frequently at all postoperative time points with the transverse system.Conclusion: The transverse ultrasound system was found to be possibly associated with less balanced salt-solution use, less phacoemulsification time, and less power required than the torsional phaco system. Postoperative data suggested that improved phaco efficiency may translate to a better overall safety profile for the patient. Keywords: phacoemulsification, transversal, torsional, cutting efficiency
format	article
author	Assil KK Harris L Cecka J
author_facet	Assil KK Harris L Cecka J
author_sort	Assil KK
title	Transverse vs torsional ultrasound: prospective randomized contralaterally controlled study comparing two phacoemulsification-system handpieces
title_short	Transverse vs torsional ultrasound: prospective randomized contralaterally controlled study comparing two phacoemulsification-system handpieces
title_full	Transverse vs torsional ultrasound: prospective randomized contralaterally controlled study comparing two phacoemulsification-system handpieces
title_fullStr	Transverse vs torsional ultrasound: prospective randomized contralaterally controlled study comparing two phacoemulsification-system handpieces
title_full_unstemmed	Transverse vs torsional ultrasound: prospective randomized contralaterally controlled study comparing two phacoemulsification-system handpieces
title_sort	transverse vs torsional ultrasound: prospective randomized contralaterally controlled study comparing two phacoemulsification-system handpieces
publisher	Dove Medical Press
publishDate	2015
url	https://doaj.org/article/cc234c6e7476483885bc5b64c389d16b
work_keys_str_mv	AT assilkk transversevstorsionalultrasoundprospectiverandomizedcontralaterallycontrolledstudycomparingtwophacoemulsificationsystemhandpieces AT harrisl transversevstorsionalultrasoundprospectiverandomizedcontralaterallycontrolledstudycomparingtwophacoemulsificationsystemhandpieces AT ceckaj transversevstorsionalultrasoundprospectiverandomizedcontralaterallycontrolledstudycomparingtwophacoemulsificationsystemhandpieces
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Transverse vs torsional ultrasound: prospective randomized contralaterally controlled study comparing two phacoemulsification-system handpieces

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