Double-mirror goniolens with dual viewing system for goniosurgery

Area of Science:

• Ophthalmology
• Surgical Innovation

Background:

• Glaucoma surgery requires precise visualization of the anterior chamber angle.
• Conventional gonioprism devices can limit surgical maneuverability and require specific patient positioning.

Purpose of the Study:

• To evaluate the efficacy of a novel double-mirror goniolens with a dual viewing system.
• To compare its performance against the standard Swan-Jacob gonioprism (SJG) in goniosurgery, goniosynechialysis, and trabeculotomy ab externo.

Main Methods:

• A prospective interventional case series involving 20 patients (20 eyes) with glaucoma.
• Patients underwent either goniosynechialysis or trabeculotomy ab externo using either the double-mirror goniolens or the SJG.
• Random assignment to one of the two goniolens groups.

Main Results:

• No intraoperative complications were reported for either goniolens.
• The SJG group necessitated head-tilting (>30 degrees) for quadrant observation and manipulation.
• The double-mirror goniolens allowed unimpeded observation and manipulation without head-tilting.

Conclusions:

• The double-mirror goniolens with a dual viewing system demonstrates superior suitability for goniosurgery.
• It enhances surgical efficiency by eliminating the need for head-tilting.