Correlation between a disc hemorrhage and peripapillary atrophy in glaucoma patients with a unilateral disc hemorrhage

Altered temporal peripapillary retinal flow in patients with disc hemorrhages

“…Since peripapillary choroid plays a role in the vascular supply to the prelaminar portion of the ONH, Ahn et al suggest ischemia to be the cause of DHs [10]. Our detection of increase in flow after resorption of DH could be explained as a compensatory change after ischemia.…”

“…An association between DHs and peripapillary atrophy has been reported, with DHs tending to occur in eyes with peripapillary atrophy and within areas of its greatest width [10,[24][25][26]. Since peripapillary choroid plays a role in the vascular supply to the prelaminar portion of the ONH, Ahn et al suggest ischemia to be the cause of DHs [10].…”

“…Various explanations proposed for DH include primary vascular dysregulation, retinal vasculature thrombosis, and ischemia [10][11][12][13]. DHs are also suspected to be a result of pressure variations inside the rigid sclera or turbulence caused by changes in pressure [14].…”

Emerging risk factors for glaucoma onset and progression

“…The region of the widest beta zone often appears at the region of the thinnest neuroretinal rim ) is more often accompanied by DH (Ahn et al, 2004;Radcliffe et al, 2008) and corresponds to the area of VF loss.…”

“…Beta-zone PPA is a common feature of glaucoma (Ahn et al, 2004;Araie et al, 1994;Buus and Anderson, 1989;Hayakawa et al, 1998;Hayreh et al, 1998;Jonas, 2005;Jonas and Xu, 1993;Jonas et al, , 1992Nevarez et al, 1988;Park et al, 1996;Primrose, 1970;Radcliffe et al, 2008;Wilensky and Kolker, 1976;Uchida et al, 1998). Jonas was the first to observe differences in features of PPA and divided it into alpha and beta zones .…”