Ciliary ArteriesOphthalmic ArteryRetinal ArteryCiliary BodyArteriesUltrasonography, Doppler, ColorLevobunololOxymetazolineMyographyCorrosion CastingRetinal VeinChoroidEyeAdrenergic AgonistsPulmonary ArteryPapaverineOptic NerveCarotid ArteriesMuscle, Smooth, VascularCerebral ArteriesRenal ArteryFemoral Artery15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidBlood Flow VelocityIsometric ContractionVasoconstrictor AgentsMesenteric ArteriesVasodilationBasilar ArteryRegional Blood FlowMuscle RelaxationSwineIntraocular PressureIliac ArteryVertebral ArteryCoronary Artery BypassFluorescein AngiographyEndothelium, VascularRadial ArteryMammary ArteriesNitric OxideCarotid Artery, InternalSubclavian ArteryCarotid Artery Diseases