Circular Cyclocoagulation Using HIFU With EYEOP1 Device in Glaucoma Patients

Inclusion Criteria: * Primary Open-angle glaucoma included pseudo-exfoliative glaucoma and pigmentary glaucoma * IOP \> 21 mm Hg on glaucoma medications, and indicated for filtering glaucoma surgery * Patient must be aged 18 years and more * No previous cyclophotocoagulation procedure in the eye * No previous laser treatment in the eye during the 3 months before HIFU procedure Exclusion Criteria: * History of previous glaucoma surgery with implantation of glaucoma drainage device in the study eye * History of ocular or retrobulbar tumor * retinal detachment, choroidal hemorrhage or detachment * Ocular infectious diseasee within 14 days before HIFU procedure