Comparison of ab externo trabeculotomy in primary open-angle glaucoma and uveitic glaucoma: long-term outcomes

The aim of this study was to compare the long-term outcomes of ab externo trabeculotomy in primary open-angle glaucoma (POAG) and uveitic glaucoma (UG). This was a retrospective single-center case series study. Twenty eyes of 17 patients with POAG and 22 eyes of 18 patients with UG were included in this study. The medical records of all consecutive patients with POAG and UG who underwent ab externo trabeculotomy since 2004 were reviewed. The main outcome measure was change in median intraocular pressure (IOP). Success was defined as IOP ≤21 mmHg (success 1) and IOP ≤21 mmHg and at least 25% reduction from baseline (success 2). In the POAG group, the median IOP decreased significantly from 22 mmHg (95% CI 21-25 mmHg; n=20) at baseline to 14 mmHg (95% CI 12-16; n=13) after 4 years, P