Direct Selective Laser Trabeculoplasty (DSLT) for Reducing Eye Pressure in Non-Caucasian Patients With Open Angle Glaucoma

Inclusion Criteria: * Adult patients of Black African descent scheduled to undergo DSLT treatment in one or both eyes. * Diagnosis of mild to moderate primary open angle glaucoma (POAG). * Mild to moderate POAG will be defined as Stage 2 or better of the Hodapp-Anderson-Parrish glaucoma staging system. * Treatment naive or washed out IOP at time 0 ranging from ≥ 21 through 32 mm Hg. Exclusion Criteria: * Screened patients who were on IOP-lowering medications who did not successfully complete medication washout at the time of the procedure (time 0). * Previous glaucoma surgeries/interventions: * Patients who have undergone prior glaucoma-related procedures (e.g., trabeculectomy, laser trabeculoplasty, MIGS, or tube shunt). * Secondary glaucoma: * Patients with secondary forms of glaucoma, such as angle-closure glaucoma, neovascular glaucoma, or glaucoma resulting from trauma or other systemic diseases. * Other significant ocular conditions including advanced cataracts, retinal diseases (e.g., age-related macular degeneration), or any condition that might complicate the assessment of intraocular pressure (IOP) or visual function as deemed by the investigator. * Subjects who are pregnant, breast-feeding, or intend to become pregnant during the study period as determined by verbal inquiry.