Abstract: The circulation mechanisms of retina and choroid are different in various aspects including autoregulation, neuro-regulation, humor regulation and neurovascular regulation, which is closely associated with the development of retinochoroidal ischemic diseases. The circulation characteristics of retina and choroid also have many imparities. It is usually considered that central retina artery predominantly contributes the blood supply of retina but in fact choroid does. This article details above topics so as to be able to explore the pathogeneses of retinochoroid vasculopathies in depth. (Ophthalmol CHN, 2024, 33: 1-8)

Key words:  , retina, choroid, circulation control, retinal vasculopathy