Cantor E, et al. - Among patients with systemic hypertension, researchers assessed the association between blood pressure (BP), ocular perfusion pressure (OPP) and occurrence of primary open-angle glaucoma (POAG). A close relationship between OPP and confirmed glaucoma in hypertensive patients was suggested in the findings, this association provided a further evidence of the vascular mechanism in glaucoma pathogenesis. Findings suggested an association of high values of diastolic BP (>90 mmHg) and low values of OPP (<40 mmHg) to an increased risk of confirmed POAG.