Intraocular Pressure Peaks After Suprachoroidal Stent Implantation

Area of Science:

• Ophthalmology
• Glaucoma Research
• Surgical Innovation

Background:

• Glaucoma management often requires surgical intervention to control intraocular pressure (IOP).
• Suprachoroidal stents offer a minimally invasive approach for IOP reduction.
• Evaluating real-world clinical outcomes of these devices is crucial.

Purpose of the Study:

• To assess the efficacy and safety of the CyPass Micro-Stent in routine clinical practice.
• To determine the long-term success rate of suprachoroidal stenting in a diverse glaucoma patient population.

Main Methods:

• Retrospective analysis of 38 consecutive cases of suprachoroidal stent implantation (CyPass Micro-Stent) at a tertiary glaucoma center.
• Patients had preoperative IOP ≥18 mm Hg.
• Success defined as IOP between 6-18 mm Hg, ≥20% IOP reduction, no medication increase, and no further glaucoma surgery at 12 months.

Main Results:

• The 12-month success rate was only 24%.
• Sudden IOP elevations >30 mm Hg occurred in 37% of eyes, with peaks up to 68 mm Hg.
• 39% of patients required additional glaucoma surgery within a median of 167 days.

Conclusions:

• Suprachoroidal stenting in a heterogeneous clinical population demonstrated a high rate of sudden IOP spikes.
• The overall success rate at 12 months was low, indicating limited long-term efficacy.
• Further investigation into patient selection and risk factors for IOP elevation is warranted.