Ocular Complications of Arteriovenous Communications of the Retina

Retinal Vein Occlusion: Late Complication of a Congenital Arteriovenous Anomaly

“…A few cases of arteriovenous communication with occlusive retinal complications are reported in the literature [1,4,5]. Mansour et al [4] and Effron et al [5] reported some patients with arteriovenous malformations who developed central RVO with secondary neovascular glaucoma.…”

“…A great number of these cases were complicated, afterwards, by retinal ischemia and, sometimes, by neovascular glaucoma [4,5].…”

“…Until some years ago these CAVA were believed to be stable and unchanging lesions; Yanoff and Fine [2] described 'non-progressive arteriovenous aneurysms'; Spencer [3] underlined the lack of progression in these malformations; however, a review of the literature has considered thrombosis of the central and branch retinal vein as a complication of the anastomosis without capillary bed [4,5].…”

“…Mansour et al [4] and Effron et al [5] reported some patients with arteriovenous malformations who developed central RVO with secondary neovascular glaucoma.…”

Central retinal vein occlusion in young people

“…The patient had the typical lesions of the central nervous system, the facial hemangioma and the retinal vascular abnormalities in form of peripheral arteriovenous communications. The suggested pathogenetic mechanism of the CRVO in cases of arteriovenous communications of the retina hypothesizes an increased retinal venous pressure, greater turbulence of blood flow and 'arterialization' of the vein; an endothelial damage and the development of CRVO can follow [17]. This mechanism could work also in cases of CRVO in subjects with Sturge-Weber syndrome.…”