Pneumatic trabecular bypass (PTB): pilot study

Area of Science:

• Ophthalmology
• Glaucoma Research
• Surgical Innovation

Background:

• Open-angle glaucoma is a leading cause of irreversible blindness.
• Current treatments aim to reduce intraocular pressure (IOP) to prevent optic nerve damage.
• Minimally invasive glaucoma surgeries (MIGS) offer new therapeutic avenues.

Purpose of the Study:

• To evaluate the initial efficacy of Pneumatic trabecular bypass (PTB) as a treatment for open-angle glaucoma.
• To assess the impact of PTB on intraocular pressure (IOP) and glaucoma medication requirements.

Main Methods:

• Prospective case series involving 10 patients (10 eyes) with open-angle glaucoma.
• PTB implantation was performed.
• Patients were monitored for IOP and medication scores for 6 months post-surgery.

Main Results:

• Mean preoperative IOP of 30.9 mm Hg decreased to 16.6 mm Hg at 6 months, a 43.46% reduction.
• Glaucoma medication score decreased from 2.6 to 0.5.
• Total success was achieved in 70% of cases, with qualified success in 20%.

Conclusions:

• Pneumatic trabecular bypass demonstrates initial effectiveness in managing open-angle glaucoma.
• The procedure led to significant reductions in IOP and medication burden.
• Further investigation into Schlemm canal rupturing pressure is warranted.