The analysis of some clinical cases of retinochoroidal ischemia permitted to the authors the elaboration of some considerations, looking classification, etiopathogenesis and clinical aspect of the cases. At the base of ischemic vascular syndrome classification were two factors: the place of vascular obstacle (extra/intraocular) and the predominant clinic syndrome (retinal/choroidal). Going from this reasons the proposed classification includes three principal parts: The predominant retinal ischemic syndrome (extraocular/intraocular retinal obliteration). The predominant choroidal ischemic syndrome (intraocular obliteration-choriocapillary/ACSP). The ischemic retinochoroidal syndrome (mixed). Are commented in great detail, etiopathogenic and clinical aspects by the principal ischemia syndrome.