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Related Experiment Videos

Topical and subconjunctival anesthesia for phacoemulsification: prospective study

H J Shammas1, M Milkie, R Yeo

  • 1Department of Ophthalmology, University of Southern California, USA.

Journal of Cataract and Refractive Surgery
|February 11, 1998
PubMed
Summary

Topical and subconjunctival anesthesia is as effective as retrobulbar-peribulbar anesthesia for phacoemulsification. This method requires less anesthetic and sedation, leading to fewer complications.

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Area of Science:

  • Ophthalmology
  • Anesthesiology

Background:

  • Phacoemulsification is a common cataract surgery technique.
  • Retrobulbar-peribulbar anesthesia has been the standard, but carries risks.

Purpose of the Study:

  • To compare the efficacy and safety of topical and subconjunctival anesthesia with retrobulbar-peribulbar anesthesia for phacoemulsification.

Main Methods:

  • A prospective study of 402 patients undergoing phacoemulsification.
  • Random assignment to topical/subconjunctival lidocaine 4% or retrobulbar injection.

Main Results:

  • Topical/subconjunctival anesthesia used less anesthetic (0.25 vs. 3.25 mL).
  • Fewer side effects from sedation and lower capsular rupture incidence (0% vs. 2.9%) with topical/subconjunctival anesthesia.

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  • No statistically significant difference in postoperative discomfort or needle insertion complications.

    • Conclusions:

    • Topical and subconjunctival anesthesia is as effective as traditional methods for phacoemulsification.
    • This approach requires less anesthetic and sedation, with improved safety profiles.