Retinal Artery OcclusionRetinal ArterySusac SyndromeFluorescein AngiographyFundus OculiGlaucoma, NeovascularAmaurosis FugaxSneddon SyndromeBlindnessRetinal VeinOphthalmic ArteryRetinal DiseasesArterial Occlusive DiseasesVisual AcuityParacentesisOphthalmodynamometryCarotid Artery DiseasesOptic Neuropathy, IschemicArteriesCiliary ArteriesInfarction, Middle Cerebral ArteryFibrinolytic AgentsVision Disorders