Glaucoma Implant Tube Lumen Obstruction Visualized Using Anterior Segment Optical Coherence Tomography

Area of Science:

• Ophthalmology
• Glaucoma Management
• Surgical Innovation

Background:

• Refractory glaucoma management presents challenges, especially in complex cases with prior surgeries.
• Traumatic aphakia and previous glaucoma surgeries necessitate advanced treatment strategies.
• Baerveldt implantation is a surgical option for refractory glaucoma, but complications can arise.

Observation:

• A 66-year-old male with refractory glaucoma and traumatic aphakia experienced persistent high intraocular pressure (IOP) post-Baerveldt implantation despite maximal medical therapy and repeat vitrectomy.
• Anterior segment optical coherence tomography (ASOCT) was utilized to investigate persistent IOP elevation.
• ASOCT imaging revealed obstruction within the glaucoma implant tube lumen.

Findings:

• The obstruction was located at the extraocular portion of the glaucoma implant tube.
• Surgical intervention involved removing the tube, extruding the obstructing material, and refixing the tube.
• Successful management led to effective intraocular pressure control post-operatively.

Implications:

• ASOCT is a valuable non-invasive tool for diagnosing glaucoma implant tube lumen obstruction.
• This case highlights the utility of ASOCT in guiding surgical decision-making for complex glaucoma cases.
• Accurate diagnosis and targeted surgical management can restore effective IOP control in cases of implant tube obstruction.