Retinal Artery OcclusionRetinal ArteryFluoresceinRetinal VeinOphthalmic ArteryFluorescein AngiographyFluoresceinsOphthalmodynamometryArteriesCiliary ArteriesSusac SyndromeRetinal VesselsFundus OculiRetinal DiseasesUltrasonography, Doppler, ColorFluorescein-5-isothiocyanatePulmonary ArteryRetinal Vein OcclusionBlood Flow VelocityCarotid ArteriesRegional Blood FlowOrbitRenal ArteryCerebral ArteriesFemoral ArteryMesenteric ArteriesCarotid Artery DiseasesVisual AcuityCarotid Artery, InternalBlindnessChoroidBasilar ArteryIntraocular PressureArterial Occlusive DiseasesAmaurosis FugaxCarotid Artery, ExternalGlaucoma, NeovascularLaser-Doppler FlowmetryEyeGanglionectomyOptic DiskVentricular Function, LeftCoronary Artery BypassIliac ArteryVertebral ArteryRetinaMammary ArteriesRadial ArteryFluorophotometrySneddon SyndromeBlood PressureSubclavian ArteryEye DiseasesMyographyVasodilationVentricular Dysfunction, LeftParacentesisOphthalmoscopyOptic Neuropathy, IschemicRetinal NeuronsCoronary VesselsSplenic ArteryBrachial ArteryVasoconstrictionMethyldopaEisenmenger ComplexCarotid Artery, CommonHepatic ArteryTomography, Optical CoherenceTreatment OutcomeProspective StudiesEmbolismMuscle, Smooth, VascularEndothelium, VascularDiabetic RetinopathyRetrospective StudiesVasodilator AgentsInjectionsFluorescent DyesFollow-Up StudiesThiocyanatesCeliac ArteryNitroarginineElectroretinographyMesenteric Artery, SuperiorHypertrophy, Left VentricularGlaucomaCarotid StenosisGlaucoma, Open-AngleMiddle Cerebral ArteryUmbilical ArteriesTime FactorsThoracic ArteriesLasersRenal Artery ObstructionCoronary AngiographyVision DisordersTemporal ArteriesMuscle RelaxationBronchial Arteries