Ricks Reiker G, Cardenas Ivan A, Ungricht Emilie L, Olson Randall J, Pettey Jeff H
Department of Ophthalmology and Visual Sciences, John A. Moran Eye Center, University of Utah, Salt Lake City, UT, USA.
University of Utah School of Medicine, Salt Lake City, UT, USA.
Clin Ophthalmol. 2023 Aug 14;17:2341-2347. doi: 10.2147/OPTH.S416604. eCollection 2023.
To evaluate efficiency of grooving, nuclear fragment removal, and changes in pressure control in the Oertli Faros using traditional peristaltic and Speed and Precision (SPEEP) features. The SPEEP mode uses novel peristaltic technology permitting independent control of flow and vacuum.
A porcine lens model was used with an enclosed chamber simulating the anterior segment. Grooving efficiency is evaluated with flow rates of 10, 30, and 50 mL/min using whole lenses. Lens cubes were emulsified at 20, 40, 60, 80, and 100% power with both SPEEP and non-SPEEP modes. Surge was evaluated with pressure gauges placed on the irrigation tubing and aspiration tubing. Pressure readings were recorded per the following: fluid and vacuum were initiated for 15 seconds, vacuum tubing was occluded for 5 seconds, tubing patency was then re-introduced for 15 seconds. Differences between sensors were recorded.
No significant increase in efficiency was seen with increasing flow rate from 30 to 50 mL/min using SPEEP. No significant differences were shown in lens fragment removal in SPEEP and non-SPEEP modes at any power tested. Pressure difference measurements were not significantly different with SPEEP and non-SPEEP modes.
We showed that lower flow rates show comparable efficiency of grooving when using the SPEEP mode. The SPEEP function did not show increased efficiency in nuclear fragment removal when compared to traditional mode. Surge control was also comparable with both SPEEP and non-SPEEP modes. We suggest that the SPEEP function included in the Oertli Faros may have some advantages.
使用传统蠕动模式以及速度与精度（SPEEP）功能，评估Oertli Faros系统的开槽效率、核碎片清除情况以及压力控制的变化。SPEEP模式采用了新颖的蠕动技术，可独立控制流量和真空度。
使用猪晶状体模型，其带有一个模拟眼前节的封闭腔室。使用完整晶状体，以10、30和50 mL/分钟的流速评估开槽效率。在SPEEP模式和非SPEEP模式下，分别以20%、40%、60%、80%和100%的功率乳化晶状体立方体。通过放置在冲洗管和抽吸管上的压力计评估压力波动。按照以下方式记录压力读数：启动液体和真空15秒，阻塞真空管5秒，然后恢复管路通畅15秒。记录传感器之间的差异。
使用SPEEP模式时，流速从30 mL/分钟增加到50 mL/分钟，效率未显著提高。在任何测试功率下，SPEEP模式和非SPEEP模式在晶状体碎片清除方面均未显示出显著差异。SPEEP模式和非SPEEP模式下的压力差测量结果无显著差异。
我们发现，使用SPEEP模式时，较低流速显示出相当的开槽效率。与传统模式相比，SPEEP功能在核碎片清除方面未显示出更高的效率。SPEEP模式和非SPEEP模式在压力波动控制方面也相当。我们认为，Oertli Faros系统中包含的SPEEP功能可能具有一些优势。
