A Fluidics Comparison of Alcon Infiniti, Bausch & Lomb Stellaris, and Advanced Medical Optics Signature Phacoemulsification Machines

Intraoperative performance and postoperative outcome comparison of longitudinal, torsional, and transversal phacoemulsification machines

“…8,10 However, comparing machines is limited by manufacturer-specific measurements and substantial variability between machines, even at the same settings. 11 In addition, physical properties may not correlate with clinical outcomes.…”

“…18 Whether the increased risk for endothelial damage is related to fluidic principles or simply to the fact that volume infused is a surrogate measure of needle time is unclear. 14 Fluidic properties of these devices have been compared in laboratory studies 11,19 ; however, the results are conflicting. The main comparative measure used was the rate of postocclusion surge, which occurs when the vacuum seal is broken.…”

Laboratory analysis of phacoemulsifier compliance and capacity

“…These experiments are often difficult to reproduce because of difficulties with setup, specimen change through repeated testing, variable incision leakage, and variability between specimens. 5,6 A primary goal of the safety and performance experiments this laboratory has performed over the years is to test phacoemulsifiers under tightly controlled laboratory conditions that can be reproduced by anyone with the appropriate test equipment. [7][8][9][10] Observations performed in vivo in human or animal eyes, while perhaps more clinically relevant, are often nearly impossible to reproduce.…”

Safety Profile of Venturi Versus Peristaltic Phacoemulsification Pumps in Cataract Surgery Using a Capsular Surrogate for the Human Lens

“…One possible explanation is that unoccluded flow vacuum in peristaltic systems is greater than some might assume. 14,18,21,22 This would decrease the anticipated difference between the 2 systems in vacuum produced at the phacoemulsification tip, even without occlusion. It is difficult to explain why peristaltic vacuum might be worse.…”