1/4. talc emboli and retinal neovascularization in a drug abuser.A 38-year-old male drug abuser had multiple emboli in the retinal circulation of the posterior pole of both eyes. He showed widespread peripheral retinal capillary nonperfusion and neovascular proliferation at the junction of perfused and nonperfused retina. The emboli were considered to be talc particles from the intravenous administration of suspensions of oral medications. The presumed mechanism of development of neovascularization in this case was the filtering out of the particles by the retinal vasculature with vaso-occlusion, ischemia and subsequent retinal neovascularization.- - - - - - - - - - ranking = 1keywords = retinal neovascularization, neovascularization (Clic here for more details about this article) |
2/4. talc retinopathy.Twenty-three patients had bilateral intraretinal talc microemboli, which were seen on ophthalmoscopic examination. Twelve of these patients had additional retinal vascular or choroidal abnormalities in the posterior pole that were confirmed by fluorescein angiography. Six patients had peripheral retinal neovascularization associated with peripheral retinal vascular nonperfusion. Of these six patients, three had associated vitreous hemorrhage, and two had optic disk neovascularization and traction retinal detachment. The progressive fundus changes seen in talc retinopathy were documented by fluorescein angiography and compared to those seen in sickle-cell retinopathy. One eye in one patient was treated by argon laser photocoagulation for proliferative retinopathy, and three eyes in two patients with vitreous hemorrhage were treated by pars plana vitrectomy.- - - - - - - - - - ranking = 0.20760486390793keywords = retinal neovascularization, neovascularization (Clic here for more details about this article) |
3/4. Ocular findings in the intravenous drug abuser.Two patients with talc emboli of the retinal vasculature, both of them intravenous drug abusers, are described. One underwent a pars plana vitrectomy for removal of the vascularized vitreous mass that obscured the retina. The vitreous mass was presumably a result of retinal neovascularization secondary to the talc embolic. Other ocular findings that may be observed in the intravenous drug abuser are described.- - - - - - - - - - ranking = 0.19809878402302keywords = retinal neovascularization, neovascularization (Clic here for more details about this article) |
4/4. Disk and peripheral retinal neovascularization secondary to talc and cornstarch emboli.A 30-year-old man was examined because of blurred vision. The symptoms had occurred immediately after the patient had injected himself intravenously with crushed, unfiltered, methylphenidate HCl (Ritalin) tablets. Fine yellow-white crystals were scattered throughout the retin of both eyes. The crystals were presumed to be talc emboli. Disk and peripheral retinal neovascularization were present. fluorescein angiography revealed widespread retinal capillary nonperfusion. This is the first reported case, to the best of my knowledge, of disk neovascularization occurring after intravenously injected, crushed, unfiltered, methylphenidate HCl tablets.- - - - - - - - - - ranking = 1keywords = retinal neovascularization, neovascularization (Clic here for more details about this article) |