Goniodiathermy: experimental studies on ab interno filtration

Area of Science:

• Ophthalmology
• Surgical Innovation
• Glaucoma Research

Background:

• Glaucoma treatment often involves improving aqueous humor outflow.
• Surgical interventions aim to create pathways for fluid drainage.
• Existing methods may lead to scarring and reduced efficacy.

Purpose of the Study:

• To evaluate the safety and feasibility of goniodiathermy in rabbit eyes.
• To histologically assess the wound created by goniodiathermy.
• To compare goniodiathermy with goniopuncture alone.

Main Methods:

• Goniodiathermy involved goniopuncture with a Barkan knife, followed by intraocular diathermy probe insertion.
• The probe heated the cut scleral fibers within the goniopuncture tract.
• Histological examination of rabbit eye sections was performed.

Main Results:

• Goniodiathermy resulted in a gaped wound in the scleral wall of the anterior chamber angle.
• Goniopuncture alone led to a thin, well-healed scar.
• The procedure was deemed safe and feasible in adult rabbits.

Conclusions:

• Goniodiathermy effectively creates an open tract in the scleral wall.
• This technique may serve as a viable model for developing filtering blebs for glaucoma treatment in humans.
• Further modifications could enhance its applicability in human glaucoma surgery.