Comparison of Phacoemulsification Grooving Efficiency in Longitudinal vs Transversal Handpieces
Samuel W Wilkinson1, Emilie L Ungricht1,2, William B West1,2
1Department of Ophthalmology and Visual Sciences, John A. Moran Eye Center, University of Utah, Salt Lake City, UT, USA.
Clinical Ophthalmology (Auckland, N.Z.)
|January 20, 2023
Summary
This study found no significant difference in grooving efficiency between longitudinal and transversal handpieces on the Whitestar Signature Pro phacoemulsification system. Higher power settings showed a trend toward shorter grooving times, especially on the transversal handpiece.
Area of Science:
- Ophthalmology
- Surgical Technology
- Biomedical Engineering
Background:
- Cataract surgery relies on efficient phacoemulsification systems.
- Understanding the performance of different handpieces and power settings is crucial for optimizing surgical outcomes.
- The Whitestar Signature Pro system offers both longitudinal and transversal handpiece options.
Purpose of the Study:
- To compare the grooving efficiency of longitudinal and transversal handpieces on the Whitestar Signature Pro phacoemulsification system.
- To evaluate the impact of various power settings (25%, 50%, 75%) on grooving performance.
- To determine if differences in efficiency exist between the two handpiece types.
Main Methods:
- Simulated cataractous lenses using porcine eyes exposed to formalin.
- Tested 120 lenses across multiple power settings (25%, 50%, 75%) on both longitudinal and transversal handpieces.
- A blinded investigator grooved lenses while a second investigator recorded times and adjusted settings on the Whitestar Signature Pro system.
Main Results:
- No statistically significant difference in grooving times was observed between longitudinal and transversal handpieces at any tested power setting (P > 0.05).
- A significant reduction in grooving time was noted when comparing the 25% power setting to the 75% power setting for the transversal handpiece (P=0.021).
- Higher power settings generally correlated with shorter grooving times, indicating increased efficiency.
Conclusions:
- Both longitudinal and transversal handpieces of the Whitestar Signature Pro system demonstrate comparable grooving efficiency at equivalent power settings.
- Increased power settings tend to improve grooving efficiency, leading to shorter procedure times.
- The transversal handpiece's efficiency appears more sensitive to adjustments in power settings compared to the longitudinal handpiece.
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