Choroidoretinal Vascular Anastomoses

Choroidoretinal Vascular Anastomosis

“…The clinical diagnosis was toxoplasmic retinitis with the presence of a choroidoretinal vascular anastomosis.Accepted for publication Aug4, 1982. From the Department of Ophthalmology, University of Pittsburgh School of Medicine, and the Eye and Ear Hospital, Pittsburgh.…”

Dominant exudative vitreoretinopathy and other vascular developmental disorders of the peripheral retina

“…In a case recently reported by Slusher and Tyler (1980) there was a cilioretinal artery which did not communicate with the retinal circulation via a capillary bed, as usual, but showed a direct anastomosis with a retinal arterial branch. Daicker (1968) likewise reported on asymptomatic congenital retinochoroidal anastomoses in the peripheral fundus.…”

Anastomotic Vessels Remain Viable after Photodynamic Therapy in Primate Models of Choroidal Neovascularization

“…In previous work, investigators have demonstrated that it is not uncommon for more than one vascular direction (choroidal to retinal versus retinal to choroidal) as well as type (artery to vein, artery to artery, vein to vein) of anastomotic permutation to evolve. 11,19,32,51,52 Moreover, the larger-diameter anastomoses observed proximally may represent RCAs of retinal origin, rather than CRAs of choroidal origin. The enlarged diameters of the retinal feeder vessels and of certain proximal anastomoses suggest the possibility of a retinal arterial origin for these particular anastomoses, with colligation of these vessels and some of their smaller collateral tributaries within the FVT membrane.…”

“…A nastomotic vessels in the retina are commonly identified according to their presumed origin and termination points by terms that include chorioretinal (choroidal retinal) anastomoses (CRAs), which also can be labeled deep retinal vascular anomalous complexes [RVACs], 1,2 or alternatively, retinochoroidal (retinal choroidal) anastomoses (RCAs), which also can originate from retinal angiomatous proliferations (RAPs). 3 Regardless of their origin/termination or their flow direction, anastomoses occur as pathologic components of various retinopathic conditions that include age-related macular degeneration (AMD), 1,2,[3][4][5][6][7][8][9][10][11][12][13][14][15][16] proliferative diabetic retinopathy, 17 uveitis, 18 -22 congenital anomalies, 19,[23][24][25][26][27] idiopathic juxtafoveolar retinal telangiectasis, 28,29 idiopathic central retinal vein occlusion, 30 sickle cell disease, 31 histoplasmosis, 19 toxoplasmosis, 32 angioid streaks, 33 and physical trauma 34 -36 (for a general review, consult Kottow 37 ). CRAs in exudative age-related macular degeneration (AMD) with occult choroidal neovascularization (CNV) represent a serious clinical feature that appears to respond poorly to either photocoagulative therapy 1,10,22,38<...>…”