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Related Experiment Videos

Retrobulbar anesthesia with a flexible catheter

P E Dantas1, M C Nishiwaki-Dantas, M J Henriques

  • 1Department of Ophthalmology, Santa Casa Hospital, Sao Paulo, Brazil.

Ophthalmic Surgery and Lasers
|April 1, 1996
PubMed
Summary

A novel direct sub-Tenon's anesthesia technique offers a safe and comfortable alternative for intraocular surgery. This method avoids complications associated with traditional methods and ensures precise anesthetic delivery.

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Area of Science:

  • Ophthalmology
  • Anesthesia

Background:

  • Traditional retrobulbar and peribulbar anesthesia carry risks of complications.
  • Newer techniques like subconjunctival and limbal infiltration have inconveniences.

Purpose of the Study:

  • To describe a novel direct sub-Tenon's anesthesia technique for intraocular surgery.
  • To evaluate the safety and effectiveness of this new method.

Main Methods:

  • A blunt dissection of conjunctiva, Tenon's capsule, and intermuscular septum in the inferior nasal quadrant.
  • Insertion of a flexible catheter to the retrobulbar space for anesthetic injection (3.0 ml).
  • Technique evaluated in 50 consecutive cases.

Main Results:

  • 100% of patients reported the procedure as comfortable and painless.
  • No complications were observed during or after the procedure.
  • Ultrasonography confirmed accurate catheter placement in the retrobulbar space.

Conclusions:

  • The direct sub-Tenon's technique is simple, effective, and safe.
  • This method avoids the risks associated with sharp instruments in the orbit.
  • It provides a reliable alternative for intraocular surgery anesthesia.

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