Cardenas Ivan A, Ungricht Emilie L, Zaugg Brian, Olson Randall J, Pettey Jeff H
From the Department of Ophthalmology and Visual Sciences, John A. Moran Eye Center, University of Utah, Salt Lake City, Utah (Cardenas, Ungricht, Zaugg, Olson, Pettey); University of Utah School of Medicine, Salt Lake City, Utah (Cardenas, Ungricht).
J Cataract Refract Surg. 2023 Oct 1;49(10):1056-1060. doi: 10.1097/j.jcrs.0000000000001198.
To determine whether there is a difference in efficiency during phacoemulsification when using the hybrid polymer tip compared with the metal balanced tip, as measured by cumulative dissipated energy (CDE) and total procedure time.
John A. Moran Eye Center, University of Utah, Salt Lake City, Utah.
Experimental study.
Phacoemulsification was performed with the Centurion Vision System and Infiniti OZil handpiece, with a 30-degree bevel metal balanced tip and hybrid polymer tip. The vacuum was set at 500 mm Hg and the aspiration flow rate at 50 mL/min. Power was changed for torsional and longitudinal ultrasound (US) at 20%, 40%, 60%, 80%, and 100%. Hardened porcine lenses were cut into 200 two mm cubes, 10 for each specified tip/power setting. They were placed into an artificial anterior chamber filled with a balanced salt solution, and phacoemulsification was performed. A second observer randomly assigned the US type and power. The same observer timed trials with a stopwatch, and CDE was recorded.
There were no significant differences in time or CDE for any power levels or US modes when comparing the 2 tips.
No significant difference in efficiency was observed when comparing the metal balanced tip with the hybrid polymer tip. Given the known improved safety profile and the overall equivalent efficiency of the hybrid tip, it could improve the performance of beginning and advanced surgeons in the future. Future study is needed to evaluate other setting combinations and to evaluate the hybrid tip in clinical settings.
通过累积消散能量（CDE）和总手术时间来确定与金属平衡头相比，使用混合聚合物头进行超声乳化时效率是否存在差异。
犹他州盐湖城犹他大学约翰·A·莫兰眼科中心。
实验研究。
使用Centurion视觉系统和Infiniti OZil手持器械，分别搭配30度斜面金属平衡头和混合聚合物头进行超声乳化。真空度设置为500毫米汞柱，抽吸流速设置为50毫升/分钟。扭转超声（US）和纵向超声的功率分别设置为20%、40%、60%、80%和100%。将硬化的猪晶状体切成200个两毫米的立方体，每种特定的探头/功率设置下取10个。将它们放入充满平衡盐溶液的人工前房，然后进行超声乳化。另一名观察者随机分配超声类型和功率。同一名观察者用秒表计时试验，并记录CDE。
比较两种探头时，在任何功率水平或超声模式下，时间或CDE均无显著差异。
比较金属平衡头和混合聚合物头时，未观察到效率有显著差异。鉴于混合头已知的更高安全性和总体相当的效率，它可能会在未来提高初级和高级外科医生的手术表现。未来需要进行研究以评估其他设置组合，并在临床环境中评估混合头。
