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Related Experiment Videos

Phacoemulsification with a bevel-down phaco tip: phaco-drill

C K Joo1, Y H Kim

  • 1Department of Ophthalmology, Kangnam St. Mary's Hospital, Catholic University Medical College, Seoul, Korea.

Journal of Cataract and Refractive Surgery
|November 22, 1997
PubMed
Summary

This study introduces a new cataract surgery technique using low phaco power for safer lens nucleus emulsification. It minimizes energy delivery, protecting the corneal endothelium and preventing posterior capsular rupture, especially in brunescent cataracts.

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Area of Science:

  • Ophthalmology
  • Surgical Techniques
  • Cataract Surgery

Background:

  • Traditional cataract surgery methods can pose risks such as endothelial damage and posterior capsular rupture.
  • Dense brunescent cataracts present unique challenges due to their hardness and potential for energy dissipation.
  • Optimizing phacoemulsification parameters is crucial for patient safety and surgical outcomes.

Purpose of the Study:

  • To present a novel in situ lens nucleus emulsification technique.
  • To evaluate the safety and efficacy of this technique, particularly for brunescent cataracts.
  • To minimize energy delivery to the corneal endothelium and prevent posterior capsular rupture.

Main Methods:

  • Emulsification of the lens nucleus using low phaco power and high vacuum.

Related Experiment Videos

  • Incorporation of a continuous curvilinear capsulorhexis and hydrodelineation.
  • Phaco tip insertion at a 30 or 45-degree angle, enabling nucleus drilling and holding capabilities.

    • Main Results:

    • The technique effectively emulsifies the nucleus without significant energy loss.
    • The separated epinucleus acts as a protective barrier, preventing posterior capsular rupture.
    • Low phaco power usage significantly reduces energy transfer to the corneal endothelium.

    Conclusions:

    • This in situ emulsification technique offers a safer approach to cataract surgery, especially for brunescent cataracts.
    • The method enhances safety by minimizing thermal and mechanical trauma to ocular tissues.
    • The technique's compatibility with nuclear chopping or divide and conquer methods increases its versatility.