Intraocular pressure changes after peribulbar injections with and without ocular compression

Area of Science:

• Ophthalmology
• Anesthesiology

Background:

• Peribulbar anesthesia is commonly used for ophthalmic surgery.
• A significant rise in intraocular pressure (IOP) can occur post-peribulbar anesthesia.
• Managing post-anesthesia IOP is crucial for patient outcomes.

Purpose of the Study:

• To investigate the IOP increase following peribulbar anesthesia.
• To evaluate the effectiveness of the Honan balloon in reducing IOP post-peribulbar anesthesia.

Main Methods:

• Two prospective studies were conducted on patients undergoing ophthalmic surgery.
• Intraocular pressure (IOP) was measured before and after peribulbar injections.
• The effect of ocular compression with the Honan balloon on IOP was assessed.

Main Results:

• Peribulbar anesthesia induced a mean IOP rise of 11.44 mm Hg in study group 1 and 9.45 mm Hg in study group 2.
• Ocular compression with the Honan balloon resulted in a significant IOP reduction.
• A mean fall of 11.05 mm Hg in IOP was observed with 20 minutes of ocular compression.

Conclusions:

• Peribulbar anesthesia leads to a notable and variable increase in intraocular pressure.
• The Honan balloon is an effective method for lowering IOP after peribulbar anesthesia.