| http://www.w3.org/ns/prov#value | - It seems that some factors such as endothelin-1 and nitric oxide, released by the vascular endothelium, are responsible for the regulation of local perfusion in the retina and ONH.49 In glaucoma, ocular flow dysregulation is common and is closely associated with the systemic vascular dysregulation mediated by endothelial dysfunction,50 and systemic factors such as vasospasm or atherosclerosis may
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