Optimization of the Oertli CataRhex 3® phacoemulsification machine

Optimization of the Oertli CataRhex 3® phacoemulsification machine

Lance A Stutz,1 Joshua B Heczko,2 Brian A Bird,3 Rhett S Thomson,2,4 Ashlie A Bernhisel,2 William R Barlow,2 Brian Zaugg,2 Randall J Olson,2 Jeff H Pettey2 1University of Texas Southwestern Medical School, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; 2Department of Ophtha...

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Autores principales: Stutz LA, Heczko JB, Bird BA, Thomson RS, Bernhisel AA, Barlow WR, Zaugg B, Olson RJ, Pettey JH
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2019
Materias:
cataract
blindness
underserved countries
vacuum
aspiration rate
power
Ophthalmology
RE1-994
Acceso en línea:https://doaj.org/article/27d63d382ff9426db971f4e807e68f5c
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spelling oai:doaj.org-article:27d63d382ff9426db971f4e807e68f5c2021-12-02T07:53:35ZOptimization of the Oertli CataRhex 3® phacoemulsification machine1177-5483https://doaj.org/article/27d63d382ff9426db971f4e807e68f5c2019-04-01T00:00:00Zhttps://www.dovepress.com/optimization-of-the-oertli-catarhex-3reg-phacoemulsification-machine-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Lance A Stutz,1 Joshua B Heczko,2 Brian A Bird,3 Rhett S Thomson,2,4 Ashlie A Bernhisel,2 William R Barlow,2 Brian Zaugg,2 Randall J Olson,2 Jeff H Pettey2 1University of Texas Southwestern Medical School, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; 2Department of Ophthalmology and Visual Sciences, John A Moran Eye Center, University of Utah, Salt Lake City, UT 84132, USA; 3University of Nevada Reno, School of Medicine, Reno, NV 89557, USA; 4University of Utah, School of Medicine, Salt Lake City, UT 84132, USA Purpose: The aim of this study was to determine optimal bottle height, vacuum, aspiration rate, and power settings of the Oertli CataRhex 3® phacoemulsification machine. Methods: Porcine lens nuclei were hardened with formalin and cut into 2.0 mm cubes. Lens cubes were emulsified using the easyTip® 2.2 mm at 30°. Fragment removal time (efficiency) and fragment bounces off the tip (chatter) were measured. Settings tested included bottle height of 60, 80, 100 and 120 cm; aspiration rate of 40, 45, and 50 mL/min; vacuum of 400, 500, and 600 mmHg; and power of 50, 60, 70, 80, 90, and 100%. Results: Efficiency and chatter increased in a linear fashion with increasing vacuum to 600 mmHg (P=0.017, P=0.046, respectively). The most efficient aspiration rate was 50 mL/min, although this finding lacked statistical significance (P=0.66). Increasing power increased efficiency up to 80% without increasing chatter (P=0.042, P=0.71, respectively). Compared to all other power settings, chatter was increased at 100% (P=0.014). Conclusion: The most efficient machine settings were vacuum at 600 mmHg, aspiration rate at 50 mL/min, and power at 80%. Keywords: cataract, blindness, underserved countries, vacuum, aspiration rate, powerStutz LAHeczko JBBird BAThomson RSBernhisel AABarlow WRZaugg BOlson RJPettey JHDove Medical Pressarticlecataractblindnessunderserved countriesvacuumaspiration ratepowerOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 13, Pp 633-639 (2019)
institution DOAJ
collection DOAJ
language EN
topic cataract
blindness
underserved countries
vacuum
aspiration rate
power
Ophthalmology
RE1-994
spellingShingle cataract
blindness
underserved countries
vacuum
aspiration rate
power
Ophthalmology
RE1-994
Stutz LA
Heczko JB
Bird BA
Thomson RS
Bernhisel AA
Barlow WR
Zaugg B
Olson RJ
Pettey JH
Optimization of the Oertli CataRhex 3® phacoemulsification machine
description Lance A Stutz,1 Joshua B Heczko,2 Brian A Bird,3 Rhett S Thomson,2,4 Ashlie A Bernhisel,2 William R Barlow,2 Brian Zaugg,2 Randall J Olson,2 Jeff H Pettey2 1University of Texas Southwestern Medical School, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; 2Department of Ophthalmology and Visual Sciences, John A Moran Eye Center, University of Utah, Salt Lake City, UT 84132, USA; 3University of Nevada Reno, School of Medicine, Reno, NV 89557, USA; 4University of Utah, School of Medicine, Salt Lake City, UT 84132, USA Purpose: The aim of this study was to determine optimal bottle height, vacuum, aspiration rate, and power settings of the Oertli CataRhex 3® phacoemulsification machine. Methods: Porcine lens nuclei were hardened with formalin and cut into 2.0 mm cubes. Lens cubes were emulsified using the easyTip® 2.2 mm at 30°. Fragment removal time (efficiency) and fragment bounces off the tip (chatter) were measured. Settings tested included bottle height of 60, 80, 100 and 120 cm; aspiration rate of 40, 45, and 50 mL/min; vacuum of 400, 500, and 600 mmHg; and power of 50, 60, 70, 80, 90, and 100%. Results: Efficiency and chatter increased in a linear fashion with increasing vacuum to 600 mmHg (P=0.017, P=0.046, respectively). The most efficient aspiration rate was 50 mL/min, although this finding lacked statistical significance (P=0.66). Increasing power increased efficiency up to 80% without increasing chatter (P=0.042, P=0.71, respectively). Compared to all other power settings, chatter was increased at 100% (P=0.014). Conclusion: The most efficient machine settings were vacuum at 600 mmHg, aspiration rate at 50 mL/min, and power at 80%. Keywords: cataract, blindness, underserved countries, vacuum, aspiration rate, power
format article
author Stutz LA
Heczko JB
Bird BA
Thomson RS
Bernhisel AA
Barlow WR
Zaugg B
Olson RJ
Pettey JH
author_facet Stutz LA
Heczko JB
Bird BA
Thomson RS
Bernhisel AA
Barlow WR
Zaugg B
Olson RJ
Pettey JH
author_sort Stutz LA
title Optimization of the Oertli CataRhex 3® phacoemulsification machine
title_short Optimization of the Oertli CataRhex 3® phacoemulsification machine
title_full Optimization of the Oertli CataRhex 3® phacoemulsification machine
title_fullStr Optimization of the Oertli CataRhex 3® phacoemulsification machine
title_full_unstemmed Optimization of the Oertli CataRhex 3® phacoemulsification machine
title_sort optimization of the oertli catarhex 3® phacoemulsification machine
publisher Dove Medical Press
publishDate 2019
url https://doaj.org/article/27d63d382ff9426db971f4e807e68f5c
work_keys_str_mv AT stutzla optimizationoftheoertlicatarhex3regphacoemulsificationmachine
AT heczkojb optimizationoftheoertlicatarhex3regphacoemulsificationmachine
AT birdba optimizationoftheoertlicatarhex3regphacoemulsificationmachine
AT thomsonrs optimizationoftheoertlicatarhex3regphacoemulsificationmachine
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