Goniotomy in Primary Congenital Glaucoma

Brief Summary This is a multicenter cohort study designed to evaluate and compare the efficacy and safety of different surgical extents of goniotomy (GT) - specifically 120°, 240°, and 360° - in the treatment of Primary Congenital Glaucoma (PCG). The study incorporates both retrospective and prospective patient enrollment.

PCG is a rare, severe, and blinding childhood eye disease for which surgery, particularly angle surgery, is the primary treatment. Goniotomy, a minimally invasive glaucoma surgery (MIGS), is increasingly used. However, the optimal extent of the angle incision remains uncertain, with limited and conflicting evidence comparing different ranges.

The study plans to enroll a total of 120 PCG patients, dividing them into three groups based on the surgical extent received (120°, 240°, or 360°). Patients will be recruited from participating ophthalmic centers across China. The study does not involve interventional assignment; grouping is based on the actual procedure performed as part of standard care.

The primary outcome measure is the qualified surgical success rate post-operatively, defined as intraocular pressure (IOP) ≤21 mmHg (with or without medication), without vision-threatening complications or the need for further glaucoma surgery. IOP will be measured by Goldmann or iCare tonometry. Secondary outcomes include various safety indicators such as intraoperative and postoperative complications, the number of intraocular pressure-lowering medications required, visual acuity, and the need for further surgery.

The study aims to generate comparative evidence to inform clinical decision-making, potentially contributing to optimized surgical guidelines for PCG treatment.