Promelle V, Bouzerar R, Daouk J, et al. - Researchers sought to measure the ophthalmic artery (OA) and the superior ophthalmic vein (SOV) flow by phase-contrast magnetic resonance imaging (PC MRI) in patients with glaucoma compared with controls. PC MRI was studied in 11 primary open-angle glaucoma patients, with a mean ± SD visual field deficit of −2.3 ± 2.7 dB and retinal nerve fiber layer thickness of 92 ± 13 µ, and 10 controls of similar age. Data reported that the OA mean ± SD mean flow was 13.21 ± 6.79 in patients and 15.09 ± 7.62 mL/min in controls and the OA maximal flow was 25.70 ± 12.08 mL/min in patients, and 28.45 ± 10.64 mL/min in controls. While no major difference was observed, in glaucoma patients, mean and maximal flow in OA and SOV seemed to be lower than in controls. The SOV flow waveform can be affected by glaucoma, corroborating the theory of impaired venous outflow in these patients.