Trabeculectomy: a reevaluation after three years and a comparison with Scheie's procedure

Area of Science:

• Ophthalmology
• Surgical Innovation

Background:

• Glaucoma management requires surgical intervention when medical treatments fail.
• Surgical options like peripheral iridectomy with thermal sclerostomy and trabeculectomy aim to reduce intraocular pressure.
• Evaluating surgical success requires considering both pressure reduction and visual function.

Purpose of the Study:

• To compare the long-term efficacy of the Scheie procedure versus trabeculectomy in glaucoma patients.
• To assess the impact of each surgical technique on intraocular pressure and visual acuity.
• To determine the optimal surgical approach based on specific glaucoma characteristics and patient factors.

Main Methods:

• A comparative study involving 71 glaucoma patients undergoing either Scheie procedure or trabeculectomy.
• Surgical outcomes were monitored for up to three years post-operation.
• Success was graded based on achieving the surgeon's target intraocular pressure and preserving visual ability.

Main Results:

• The Scheie procedure demonstrated superior intraocular pressure reduction (mean 12.3 mm Hg vs. 16.6 mm Hg at 3 years) and longer duration of effect compared to trabeculectomy.
• Long-term visual results were comparable between the two surgical methods.
• Trabeculectomy was associated with fewer cases of flat anterior chambers post-surgery.

Conclusions:

• The Scheie procedure offers more sustained intraocular pressure control than trabeculectomy.
• Trabeculectomy is a valuable filtration surgery with specific indications, particularly in certain types of primary glaucoma, but is relatively contraindicated in secondary glaucoma.
• Surgical choice should consider individual patient needs, glaucoma type, and potential complications.