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Related Experiment Video

Updated: May 10, 2026

Transconjunctival Approach for Injection into the Rat Optic Nerve

Transconjunctival Approach for Injection into the Rat Optic Nerve

Published on: April 4, 2025

Transconjunctival approach to peribulbar block.

Lindsay A McGrath¹, Christopher P Bradshaw

¹University of Queensland, School of Medicine, Brisbane, Qld, Australia ; City Eye Centre, Brisbane, Qld, Australia.

Clinical Ophthalmology (Auckland, N.Z.)

|June 15, 2013

Summary

This study presents a modified peribulbar block technique for eye anesthesia, enhancing safety and simplicity for anesthetists. The improved method addresses uncertainties in current practices, offering a low-cost alternative with minimal instrumentation changes.

Keywords:

anesthesia injection ropivacaine

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Area of Science:

Ophthalmology
Anesthesiology
Surgical Procedures

Background:

Peribulbar block anesthesia is increasingly performed by anesthetists for ophthalmic procedures.
Current literature presents uncertainties regarding optimal needle length, injection site, injectate volume, and technique (single vs. double injection).

Purpose of the Study:

To present a modified peribulbar block anesthesia technique.
To enhance the safety and simplicity of peribulbar injections.
To provide a cost-effective alternative with minimal changes to existing equipment.

Main Methods:

A modified peribulbar block injection technique is described.
The technique focuses on optimizing needle entry, volume, and injection approach.
Instrumentation modifications are kept to a minimum.

Main Results:

The modified technique offers increased safety compared to standard methods.
The technique is simpler to perform, reducing potential for error.
The approach is low-cost and requires little change in instrumentation.

Conclusions:

The modified peribulbar block technique provides a safe, simple, and cost-effective option for eye block anesthesia.
This technique addresses current uncertainties in peribulbar injection practices.
Anesthetists can readily adopt this modified technique with minimal training and equipment adjustments.