[Ultrasound biomicroscopy findings in the area of previous surgical intervention in refractory glaucoma patients under topical ocular hypotensive therapy].

Aim: to evaluate the effectiveness of different classes of topical hypotensive medications in refractory primary open-angle glaucoma (POAG), judging from structural changes in artificial pathways for intraocular fluid (IOF) visualized with ultrasound biomicroscopy (UBM).

Material And Methods: UBM analysis was performed in 104 eyes of 102 patients, mean age 68.4 ± 0.