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Effect of high-vacuum setting on phacoemulsification efficiency.

Darren Shu Jeng Ting1, Jon Rees1, Jia Yu Ng1

  • 1From the Sunderland Eye Infirmary (Ting, Ng, Allen, Steel), the School of Psychology (Rees), University of Sunderland, Sunderland, and the Institute of Genetic Medicine (Steel), Newcastle University, Newcastle upon Tyne, United Kingdom.

Journal of Cataract and Refractive Surgery
|October 10, 2017
PubMed
Summary
This summary is machine-generated.

High vacuum settings significantly improve phacoemulsification efficiency, reducing cumulative dissipated energy and heminucleus removal time during cataract surgery. This enhances surgical outcomes with active fluidics and torsional phacoemulsification.

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Area of Science:

  • Ophthalmology
  • Surgical Technology

Background:

  • Phacoemulsification is a key technique in modern cataract surgery.
  • Optimizing machine settings is crucial for surgical efficiency and patient outcomes.

Purpose of the Study:

  • To compare the effectiveness of high-vacuum versus low-vacuum settings in phacoemulsification.
  • To evaluate the impact on cumulative dissipated energy (CDE) and removal time.

Main Methods:

  • Prospective clinical trial involving 160 patients undergoing cataract surgery.
  • Phacoemulsification performed using a stop-and-chop technique with either high (600 mm Hg) or low (350 mm Hg) vacuum settings.
  • Outcome measures included CDE and active heminucleus removal time.

Main Results:

  • High-vacuum setting resulted in significantly lower CDE (2.81 vs. 3.81 percent-seconds, P < .001).
  • Active heminucleus removal time was significantly shorter with high vacuum (27.77 vs. 33.59 seconds, P < .001).
  • Results were consistent across surgeons and patient factors, with no intraoperative complications.

Conclusions:

  • High-vacuum settings enhance phacoemulsification efficiency.
  • This improvement is achieved through optimized active fluidics and torsional phacoemulsification.
  • The findings support the use of higher vacuum settings for more efficient cataract surgery.