11/13. choroidal neovascularization after cryoapplication.After sealing peripheral retinal tears in retinal detachment surgery by means of cryoapplications, neovascularization appeared, stemming from the choroidal circulation. This complication was noted in three cases of retinal detachment with tears in an area of latticelike degeneration. The neovascularization, clearly originating from the choroid, extended into the vitreous cavity through the chorioretinal scar created by the cryoapplication. Repeated attempts to destroy the neovascularization with argon laser applications proved unsuccessful. In the 4--6-year follow-up of the cases recurrent hemorrhages were observed. The etiology of the neovascularization remains unknown, but it is probably related to the presence of subretinal pigment epithelium neovascularization encountered in a high percentage of adults in the retinal periphery. The choroidal neovascularization described provides evidence that, in addition to xenon arc and argon laser applications, cryoapplication on the retina can also cause this rare complication.- - - - - - - - - - ranking = 1keywords = neovascularization (Clic here for more details about this article) |
12/13. Radial chorioretinal folds. A sign of choroidal neovascularization.A radial pattern of chorioretinal folds surrounding the margins of a localized macular detachment occurred in four patients with drusen of Bruch's membrane. Biomicroscopic and angiographic findings suggested that contraction of a subpigment epithelial choroidal neovascular membrane caused a focal area of shrinkage, or puckering, of the choroid and a series of chorioretinal folds radiating outward from the edge of the membrane. In two eyes, these radial folds developed early in the course of the macular detachment before any other reliable biomicroscopic signs of choroidal neovascularization were present.- - - - - - - - - - ranking = 0.5keywords = neovascularization (Clic here for more details about this article) |
13/13. Autosomal dominant vitreoretinochoroidopathy.Autosomal dominant vitreoretinochoroidopathy is a newly described fundus dystrophy characterized by abnormal chorioretinal hypopigmentation and hyperpigmentation, usually lying between the vortex veins and the ora serrata for 360 degrees. In this zone, there are a discrete posterior boundary, preretinal punctate white opacities, retinal arteriolar narrowing and occlusion, and, in some cases, choroidal atrophy. Most affected family members have diffuse retinal vascular incompetence, cystoid macular edema, and presenile cataracts. The vitreous is characterized by fibrillar condensation and a moderate number of cells. Electroretinograms are normal in younger affected individuals and are only moderately abnormal in older ones. Preretinal neovascularization, present in the posterior pole, is progressive in the proband. There are no identifiable systemic or skeletal abnormalities, high myopia, optically empty vitreous, lattice degeneration, areas of white-without-pressure, retinal breaks, or retinal detachment; thus, previously described vitreoretinopathies can be excluded from diagnostic consideration. Progression of this diagnostic seems to be extremely slow in most family members.- - - - - - - - - - ranking = 0.1keywords = neovascularization (Clic here for more details about this article) |
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