The aim of this study was to evaluate retinal and choriocapillaris vessel density using optical coherence tomography angiography (OCTA) in eyes with central retinal vein occlusion (CRVO) and branch retinal vein occlusion (BRVO) complicated by macular edema (ME). Sixty eyes of 60 patients with CRVO or BRVO and ME and 40 healthy subjects underwent measurements of superficial and deep foveal and p...

uncontrolled hypertension is well- known to give rise to systemic complications involving multiple central organs. artherosclerosis leads to damage of the retinal vessels wall, contributing to venous stasis, thrombosis and finally, occlusion. retinal vein occlusions compromise vision through development of ischaemic maculopathy, macular oedema, and rubeotic glaucoma. laser photocoagulation rema...

data suggest that the multifocal electroretinography (mferg) may have a role in the assessment of patients with central retinal vein occlusion (crvo). to explore the mferg responses in patients with crvo. mferg responses were recorded at 61 discrete retinal locations from both eyes of 25 patients diagnosed with retinal vein occlusions within 3 weeks of onset. the latencies and amplitudes of ave...

purpose: to evaluate the etiologic and epidemiologic findings in central retinal artery occlusion (crao) patients in a tertiary eye center in tehran, iran. methods: all patients with crao refered to the emergency department of farabi hospital during 2001-2002 were enrolled in the study. all patients received routine treatment and were followed for 3 months. cardiology consult was done for all p...

PURPOSE To investigate whether intravitreal ranibizumab (0.05 mL) treatment affects retinal vessel diameters and retrobulbar blood velocities in patients with acute branch retinal vein occlusion (BRVO). METHODS Thirty patients with clinically significant macular edema secondary to BRVO were included. The duration of the study was three months. Patients were studied before and one week, one mo...

Purpose To investigate the effects of intravitreal 0.7 mg dexamethasone implants (Ozurdex) on arterial and venous oxygen saturation, retinal vessel diameter, and retrobulbar blood flow velocity in patients with macular edema (ME) due to retinal vein occlusion (RVO). Methods This prospective, nonrandomized clinical trial included 40 eyes of 40 patients with ME due to RVO. Measurements of arter...

central retinal vein occlusion (crvo) is the third most common blinding vascular retinal disorder. as there is no proven treatment for crvo, we performed this study to evaluate the effectiveness of radial optic neurotomy (ron) on visual acuity in eyes with crvo. this study was designed as an interventional case series. pars plana vitrectomy with ron was performed in 18 eyes of 16 patients with ...

susac's syndrome (ss) is a clinical triad of encephalopathy, branch retinal artery occlusion and sensorineural hearing loss and maybe due to an immune-mediated endotheliopathy. because of its rarity and some similarities to other common neurological conditions such as multiple sclerosis and acute disseminated encephalomyelitis, it is often misdiagnosed and therefore mistreated. to the best of o...

PURPOSE Retinal oxygen tension (PO2), photoreceptor oxygen consumption (QO2), the local electroretinogram (LERG), and the vitreally recorded electroretinogram (ERG) were evaluated during retinal artery occlusion in the cat. The feasibility of supplying the retina with oxygen during occlusion by ventilation with 100% O2 was evaluated. METHODS Double-barreled oxygen microelectrodes were used to...

Vitrectomy With Intrasurgical Control of Ocular Hypotony as a Treatment for Central Retina Artery Occlusion Central retinal artery occlusion (CRAO) is an ocular emergency usually caused by blockage of a vessel by a thrombus or embolus. The central retinal artery supplies the inner two thirds of the retina; the occlusion of this vessel causes ischemia and subsequent necrosis. Experimental studie...