Effect of increasing flow when grooving during phacoemulsification

Journal of Cataract and Refractive Surgery
Brian A BirdRandall J Olson

Abstract

To determine optimum flow settings on the Centurion Vision System during the grooving step in cataract surgery. John A. Moran Eye Center Laboratory, University of Utah, Salt Lake City, Utah, USA. Experimental study. Intact porcine lenses hardened by formalin and placed in a chamber designed to simulate the anterior chamber of the eye were used to test flow rate settings at 20 mL/min, 40 mL/min, and 60 mL/min. Vacuum was set at 400 mm Hg, longitudinal power at 80%, torsional power at 80%, and intraocular pressure at 50 mm Hg. A balanced phaco tip with a 20-degree tip and a 30-degree bevel was used. Efficiency (time to groove the lens in half) was determined. Increasing flow from 20 to 40 mL/min during grooving increased efficiency by 17% (P = .05), with no significant improvement shown at 60 mL/min. A flow rate of 40 mL/min was determined to be most efficient during the grooving step of cataract surgery. Further increases in flow rate showed no statistically significant improvement in efficiency, and with only 17% improvement flow rates less than 40 mL/min might be almost as efficient and might be safer.

References

Jul 4, 2006·Journal of Cataract and Refractive Surgery·Marielle PayneRandall J Olson
Jan 16, 2007·American Journal of Ophthalmology·Dan GeorgescuRandall J Olson
Jul 15, 2009·Clinical & Experimental Ophthalmology·Carolee M Cutler PeckRandall J Olson
Mar 17, 2010·American Journal of Ophthalmology·Jay J MeyerRandall J Olson
May 26, 2012·Journal of Cataract and Refractive Surgery·David L DeMillRandall J Olson
Jun 12, 2013·Journal of Cataract and Refractive Surgery·Zack B OakeyRandall J Olson
Apr 29, 2014·Journal of Cataract and Refractive Surgery·Aabid M FarukhiRandall J Olson
Apr 29, 2014·Journal of Cataract and Refractive Surgery·Isha GuptaRandall J Olson
Aug 20, 2014·Journal of Cataract and Refractive Surgery·Kevin R KirkRandall J Olson
Feb 11, 2015·Journal of Cataract and Refractive Surgery·Judd M CahoonRandall J Olson
Feb 11, 2015·Journal of Cataract and Refractive Surgery·Jason D JensenRandall J Olson
Mar 10, 2015·Journal of Cataract and Refractive Surgery·Isha GuptaRandall J Olson
Jun 24, 2015·Journal of Cataract and Refractive Surgery·Kevin GarffRandall J Olson
Oct 13, 2015·Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie·Brian C StaggRandall J Olson
Dec 26, 2015·Journal of Cataract and Refractive Surgery·Gareth L GardinerRandall J Olson
Feb 15, 2016·Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie·Bradley S HenriksenRandall J Olson
Mar 22, 2016·Clinical & Experimental Ophthalmology·Jason D JensenRandall J Olson
Apr 27, 2016·Journal of Cataract and Refractive Surgery·Tyler BoulterRandall J Olson
Jun 4, 2016·Journal of Cataract and Refractive Surgery·Jason D JensenRandall J Olson
Oct 11, 2017·Journal of Cataract and Refractive Surgery·Dannen D WrightRandall J Olson
Dec 11, 2017·Journal of Cataract and Refractive Surgery·Alex J WrightRandall J Olson
Jan 18, 2018·Journal of Cataract and Refractive Surgery·Tyler BoulterRandall J Olson

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Citations

Jul 6, 2019·Survey of Ophthalmology·Tyler BoulterJeff H Pettey

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