Bubble-free Gonioscopy

Area of Science:

• Ophthalmology
• Glaucoma Diagnosis
• Ophthalmic Device Development

Background:

• Accurate gonioscopy is crucial for glaucoma diagnosis and treatment.
• The Goldmann 3-mirror lens, the current standard, requires coupling gel and can trap air bubbles.
• An ideal gonioscopy lens would eliminate the need for gel and prevent air bubble formation.

Purpose of the Study:

• To evaluate a prototype 2-mirror goniolens designed to eliminate the need for coupling gel and prevent air bubble trapping.
• To assess the efficacy of the new lens in clinical practice.

Main Methods:

• A prototype 2-mirror goniolens with specific curvature and diameter was used.
• Bilateral keratometer measurements were taken for 69 patients.
• The lens was applied to anesthetized eyes, and outcomes (air bubble trapping) were recorded for 64 patients.

Main Results:

• A total of 64 patients were evaluated with the prototype lens.
• 84.38% (54/64) of eyes were successfully evaluated without air bubble trapping.

Conclusions:

• The prototype 2-mirror goniolens successfully eliminated the need for coupling gel and prevented air bubbles in 84.38% of cases.
• These findings support the development of novel bubble-free goniolenses for procedures like laser trabeculoplasty.