Retinal Artery OcclusionRetinal ArteryRetinal VeinOphthalmic ArteryOphthalmodynamometryArteriesCiliary ArteriesSusac SyndromeFluorescein AngiographyRetinal VesselsRetinal DiseasesUltrasonography, Doppler, ColorFundus OculiEyePulmonary ArteryRetinal Vein OcclusionOrbitIntraocular PressureCarotid ArteriesBlood Flow VelocityRegional Blood FlowCerebral ArteriesRenal ArteryFemoral ArteryBlindnessMesenteric ArteriesCarotid Artery DiseasesCarotid Artery, InternalVisual AcuityBasilar ArteryAmaurosis FugaxLaser-Doppler FlowmetryArterial Occlusive DiseasesCarotid Artery, ExternalGlaucoma, NeovascularOptic DiskGanglionectomyChoroidOcular HypertensionIliac ArteryVertebral ArteryCoronary Artery BypassRetinaRadial ArterySneddon SyndromeMammary ArteriesMyographyParacentesisVasodilationSubclavian ArteryRetinal NeuronsBlood PressureGlaucomaEye DiseasesOptic Neuropathy, IschemicToxoplasmosis, OcularGlaucoma, Open-AngleSplenic ArteryBrachial ArteryMethyldopaEisenmenger ComplexVasoconstrictionHepatic ArteryCarotid Artery, CommonOphthalmoscopyMuscle, Smooth, VascularCoronary VesselsEmbolismVision DisordersEndothelium, VascularVasodilator AgentsCeliac ArteryNitroarginineRetrospective StudiesMesenteric Artery, SuperiorProspective StudiesCarotid StenosisInjectionsOptic NerveElectroretinographyUmbilical ArteriesMiddle Cerebral ArteryRenal Artery ObstructionTreatment OutcomeThoracic ArteriesFollow-Up StudiesAlbinism, OcularTemporal ArteriesDominance, OcularMuscle RelaxationBronchial ArteriesDiabetic RetinopathyTomography, Optical CoherenceFibrinolytic AgentsPopliteal ArteryTonometry, OcularUlnar ArteryRefraction, OcularEye NeoplasmsUterine Artery