&lt;p&gt;The effect of increasing power when grooving using phacoemulsification&lt;/p&gt;

Thomson, Rhett S.; Bird, Brian A; Stutz, Lance A.; Heczko, Joshua; Bernhisel, Ashlie; Barlow, William R.; Zaugg, Brian; Olson, Randall J.; Pettey, Jeff H.

doi:10.2147/opth.s194731

Cited by 6 publications

(5 citation statements)

References 31 publications

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“…The differences between the SPEEP and non-SPEEP modes are likely limited to control of vacuum under times of occlusion; this may be helpful to a skillful surgeon in removing hard lens fragments where chatter is occurring or in other special circumstances. 7 However, looking at classical parameters, we did not document a difference in lens fragment removal efficiency.…”

mentioning

confidence: 56%

“…Purported advantages would include increased control of vacuum in a peristaltic system translating to increased efficiency while preserving anterior chamber stability. While previous studies have evaluated the efficiency of traditional peristaltic platforms, [5][6][7][8] much is unknown with regard to Oertli's SPEEP pump. This study seeks to evaluate the performance of Oertli's SPEEP pump in grooving and nuclear fragment removal efficiency, and post-occlusion surge, using a porcine lens model and the Oertli Faros device.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Modified Peristaltic Phacoemulsification Device on Efficiency and Post-Occlusion Pressure Surge

Ricks,

Cardenas,

Ungricht

et al. 2023

OPTH

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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. Methods: 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. Results: 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. Conclusion: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.

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mentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Effect of Modified Peristaltic Phacoemulsification Device on Efficiency and Post-Occlusion Pressure Surge

Ricks,

Cardenas,

Ungricht

et al. 2023

OPTH

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“…The chamber’s interior is a 16 mm diameter hemisphere ( Figure 1 ). 5 Each lens was placed inside the chamber, which was then filled with BSS before grooving. Grooving proceeded by bisecting the lens at its widest point.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Phacoemulsification Grooving Efficiency in Longitudinal vs Transversal Handpieces

Wilkinson¹,

Ungricht²,

West³

et al. 2023

OPTH

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Purpose To determine the difference, if any, in grooving efficiency at various settings on the Whitestar Signature Pro phacoemulsification (phaco) system. Methods Cataractous lenses were simulated by exposing porcine lenses to formalin for 2 hours. A total of 120 lenses were analyzed at various power settings on both longitudinal and transversal handpieces. Twenty trials each were performed with power set to 25%, 50%, and 75% on both handpieces. A Whitestar Phaco Handpiece System was used to provide longitudinal power, and a Whitestar Signature Ellipsis Handpiece provided transversal power. Lenses were placed within a plastic chamber and grooved by an investigator blinded to settings. A second investigator recorded times and adjusted settings. The Whitestar Signature Pro phaco system was used for grooving. Results There was no significant difference in grooving times between the longitudinal and transverse handpieces at any power setting (P > 0.05). There was a significant decrease in grooving times when comparing the 25% power setting with the 75% power setting for the transversal handpiece ( P =0.021). Conclusion Both longitudinal and transversal handpieces on the Whitestar Signature Pro phaco system produce similar results to one another at each power setting. There is a general trend toward shorter grooving times, reflecting greater efficiency, at higher power settings. Grooving efficiency on the transversal handpiece may be more affected by changes in the power settings as compared with the longitudinal settings.

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“…There were also studies focused on longitudinal US in the AFS. Thomson et al tested longitudinal US power at 40%, 70% and 100% with the torsional power at 0% and considered that 70% power was the most efficient setting among them [ 22 ]. After that, Bohner and colleagues conducted a similar experiment in which the torsional power was set at 100% [ 23 ].…”

Section: Two Different Fluidics Systems Of Pkementioning

confidence: 99%

Application of the Active-Fluidics System in Phacoemulsification: A Review

Luo

et al. 2023

JCM

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The fluidics system is an indispensable and primary component of phacoemulsification. Both the gravity-fluidics system and active-fluidics system are commonly used in practice. The irrigation pressure of the gravity-fluidics system is determined by the bottle height, which is relatively constant, while the active-fluidics system is paired with a cassette that contains pressure sensors to monitor intraocular pressure changes. The active-fluidics system allows surgeons to preset a target intraocular pressure value, and it replenishes the fluids proactively; thus, the intraocular pressure is consistently maintained near the target value. Under such circumstances, stable intraocular pressure and anterior chamber volume values could be acquired. Research on surgical safety, efficiency and results have reported several strengths of the active-fluidics system. It is also advantageous in some complicated cataract surgeries. However, the system is not widely used at present, mainly due to its low penetration rate and high equipment cost. Some of its updates such as the new Active Sentry handpiece showed potential superiority in laboratory studies recently, but there is still further research to be conducted. This article gives an overview of the mechanism and performance of the active-fluidics system, and it is expected to provide clues for future research.

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<p>The effect of increasing power when grooving using phacoemulsification</p>

Cited by 6 publications

References 31 publications

Effect of Modified Peristaltic Phacoemulsification Device on Efficiency and Post-Occlusion Pressure Surge

Effect of Modified Peristaltic Phacoemulsification Device on Efficiency and Post-Occlusion Pressure Surge

Comparison of Phacoemulsification Grooving Efficiency in Longitudinal vs Transversal Handpieces

Application of the Active-Fluidics System in Phacoemulsification: A Review

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