Surgery for refractory glaucoma. Results and complications with a modified Schocket technique

Area of Science:

• Ophthalmology
• Glaucoma Surgery

Background:

• Glaucoma is a leading cause of irreversible blindness.
• Refractory glaucoma often requires surgical intervention when medical management fails.
• Silicone tube implants are utilized for complex glaucoma cases.

Purpose of the Study:

• To evaluate the efficacy and complications of silicone tube implant surgery for refractory glaucoma.
• To compare outcomes between different silicone tube insertion techniques.

Main Methods:

• A review of 55 eyes from 50 patients undergoing silicone tube implant surgery.
• Minimum one-year follow-up for 30 eyes.
• Analysis of success rates, visual acuity, complications, and revision surgery rates.
• Comparison of cyclodialysis and trabeculectomy approaches for tube insertion.

Main Results:

• An 80% success rate (intraocular pressure ≤ 25 mm Hg) was observed in 30 eyes with a mean 18-month follow-up.
• Visual acuity was maintained or improved in 67% of eyes.
• Common complications included tube exposure, blockage, and corneal issues. Revision surgery was needed in 38% of eyes.
• The trabeculectomy approach had higher rates of tube exposure, choroidal detachment, and flat anterior chambers.
• The cyclodialysis approach showed increased hyphema and corneal endothelial touch.

Conclusions:

• Silicone tube implants are effective in managing refractory glaucoma, achieving significant intraocular pressure reduction.
• Understanding and mitigating identified complications is crucial for successful outcomes.
• The cyclodialysis approach may offer a different complication profile compared to the trabeculectomy approach.