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Comparative Study
. 2015 Feb;41(2):428-32.
doi: 10.1016/j.jcrs.2014.12.043.

Comparison of venturi and peristaltic vacuum in phacoemulsification

Judd M Cahoon  1 , Isha Gupta  1 , Gareth Gardiner  1 , Dallas Shi  1 , Brian Zaugg  1 , Jeff H Pettey  1 , William R Barlow Jr  1 , Randall J Olson  2
Affiliations
Comparative Study

Comparison of venturi and peristaltic vacuum in phacoemulsification

Judd M Cahoon et al. J Cataract Refract Surg. 2015 Feb.

Abstract

Purpose: To evaluate the efficiency of peristaltic-based and venturi-based vacuums.

Setting: John A. Moran Eye Center Laboratories, University of Utah, Salt Lake City, Utah, USA.

Design: Experimental study.

Methods: Porcine lenses were hardened with formalin and cut into 2.0 mm cubes. Time to fragment removal (efficiency) and fragment bounces off the tip (chatter) were measured using a Signature machine with the ability to switch between peristaltic-based and venturi-based vacuum. Micropulse longitudinal and transversal ultrasound motions were tested.

Results: Venturi-based vacuum had increased efficiency and decreased chatter compared with peristaltic-based vacuum at lower vacuum levels.

Conclusion: Use of a venturi-based vacuum, when available, may result in reduced clearance time of lens material and mitigate chatter even under noisy conditions.

Financial disclosure: No author has a financial or proprietary interest in any material or method mentioned.

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