Optic nerve head blood flow regulation during changes in arterial blood pressure in patients with primary open-angle glaucoma

Purpose Abnormal autoregulation of optic nerve head blood flow (ONHBF) has been postulated to play an important role in primary open‐angle glaucoma (POAG). We used laser Doppler flowmetry (LDF) to estimate quantitatively the ONHBF and compared ONHBF autoregulation between glaucoma patients and healthy controls during isometric exercise.