title: [Collateral circulations and new vessels in retinal branch vein occlusions. II. New vessels (author's transl)].
abstract: Two types of anastomotic new vessels develop after retinal branch vein occlusions. In a previous article (Arch. Ophtal. (Paris), 1977, 8-9, pp. 507-522) the useful collateral vessels were described in the re-establishment of a better circulation in the territory of the occluded vein. The second part discusses new vessels: they are dangerous and useless. Their pathogenesis poses the problem of the relationship between hypoxia, ischaemia, revascularisation and vasoproliferation. Their prevention and treatment calls for laser photocoagulation of the ischaemic territory.
mesh_terms: D001128:Argon; D002196:Capillaries / Q000503:physiopathology; D003097:Collateral Circulation; D006801:Humans; D007511:Ischemia / Q000503:physiopathology / Q000601:surgery; D053685:Laser Therapy; D012169:Retinal Vein / Q000503:physiopathology / Q000601:surgery; D014652:Vascular Diseases / Q000503:physiopathology
chemical_list: D001128:Argon
vernacular_title: Circulations de suppléances et néo-vaisseaux dans les occlusions des branches veineuses rétiniennes. II. Les néo-vaisseaux.