Long-term outcomes after phacoemulsification and trabeculectomy in uncontrolled glaucoma and cataract in staged versus combined approaches: a single-center observational study

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OBJECTIVE: To assess the long-term (4 year) outcomes of staged (phacoemulsification ≥6 months prior to trabeculectomy) or combined (phacotrabeculectomy) surgical approaches in patients with uncontrolled glaucoma. METHODS AND ANALYSIS: Patients who underwent trabeculectomy alone (with phacoemulsification at least 6 months before trabeculectomy - staged approach) and simultaneous phacotrabeculectomy (combined approach) were included in this retrospective chart review study. Surgical success was defined as complete (without medication) or qualified (with medication) according to 3 criteria of upper limits: intraocular pressure (IOP) > 21 mmHg (criterion A), > 18 mmHg (B), > 15 mmHg (C). Mean IOP values were compared between groups at each follow-up. RESULTS: A total of 72 patients (staged n = 35, combined n = 37) were included. No differences in baseline characteristics were observed between groups. The mean age was 72.3 years, almost three-quarters were diagnosed with primary open-angle glaucoma (73.6%), and mean baseline IOP was 26.4 ± 7.2. Mean IOP significantly decreased in both groups. After 4 years of follow-up, patients in the staged group had a significantly lower mean IOP (10.9 ±3.6 vs. 14.8 ± 6.2, p 0.002), a higher surgical success rate according to each criterion, and a lower need of postoperative drugs and manipulation compared to the combined approach. CONCLUSION: In this study comparing staged and simultaneous approaches with the longest follow-up to date, patients with cataract and glaucoma experience a substantial and comparable reduction in IOP from baseline after both approaches. The analysis is mainly limited by its retrospective, non-randomized design. However, compared to simultaneous phacotrabeculectomy, the staged approach was associated with lower final IOP, higher long-term surgical success, and fewer postoperative interventions.

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