Retinal Artery OcclusionRetinal ArterySusac SyndromeFluorescein AngiographyFundus OculiGlaucoma, NeovascularAmaurosis FugaxSneddon SyndromeBlindnessRetinal VeinOphthalmic ArteryRetinal DiseasesArterial Occlusive DiseasesVisual AcuityParacentesisOphthalmodynamometryCarotid Artery DiseasesArteriesOptic Neuropathy, IschemicCiliary ArteriesInfarction, Middle Cerebral ArteryFibrinolytic AgentsVision DisordersRetinal Vessels