Retinal Artery OcclusionRetinal ArteryRetinal VeinOphthalmic ArteryOphthalmodynamometryArteriesCiliary ArteriesSusac SyndromeFluorescein AngiographyRetinal VesselsUltrasonography, Doppler, ColorRetinal DiseasesFundus OculiPulmonary ArteryRetinal Vein OcclusionCarotid ArteriesBlood Flow VelocityOrbitCerebral ArteriesRenal ArteryFemoral ArteryRegional Blood FlowMesenteric ArteriesCarotid Artery DiseasesCarotid Artery, InternalBasilar ArteryBlindnessAmaurosis FugaxArterial Occlusive DiseasesCarotid Artery, ExternalIntraocular PressureLaser-Doppler FlowmetryGanglionectomyGlaucoma, NeovascularIliac ArteryVisual AcuityVertebral ArteryCoronary Artery BypassOptic DiskEyeRadial ArterySneddon SyndromeMammary ArteriesMyographySubclavian ArteryVasodilationParacentesisRetinal NeuronsChoroidEye DiseasesBlood PressureOptic Neuropathy, IschemicRetinaSplenic ArteryBrachial ArteryMethyldopaEisenmenger ComplexVasoconstrictionHepatic ArteryCarotid Artery, CommonMuscle, Smooth, VascularCoronary VesselsEmbolismCeliac ArteryEndothelium, VascularVasodilator AgentsNitroarginineMesenteric Artery, SuperiorCarotid StenosisUmbilical ArteriesOphthalmoscopyMiddle Cerebral ArteryRenal Artery ObstructionGlaucoma, Open-AngleThoracic ArteriesProspective StudiesTemporal ArteriesRetrospective StudiesGlaucomaMuscle RelaxationBronchial ArteriesFibrinolytic AgentsTreatment OutcomePopliteal ArteryUlnar ArteryInjectionsFollow-Up StudiesVision DisordersUterine ArteryElectroretinographyOptic Nerve