Kromer R, et al. - Using optical coherence tomography angiography (OCT-A), researchers examined the density of the active flow vasculature in the macular area in patients with glaucoma vs healthy control participants. A reduced macular flow density, measured by OCT-A, was observed in the patients with glaucoma vs healthy control participants. Results suggested that, in patients with glaucoma, the independence of the macular flow density of the retinal segment thickness changes could signal an altered vascular element. No significant correlation with perimetry results, retinal nerve fiber layer thickness, or retinal segment thickness was demonstrated by the flow density.