We report the case of a 24-year-old man presenting with sudden visual loss in the left eye from a central retinal artery occlusion. An extensive clinical investigation revealed no etiology. Three weeks later, however, the patient developed hearing loss followed by encephalopathy and multiple branch retinal artery occlusions in the right eye. Fluorescein angiography confirmed retinal vascular oc...

Sir, I would like to correct my comment in my original letter,[1] commenting on the article published by Rishi et al.,[2] which is “ this condition is unlikely to occur on ground of embryology, as the central retinal artery develops from a single hyaloid artery and enters the lamina cribrosa.” Now, my attention has been drawn by Dr. S S Hayreh that on certain occasions it is possible to have tw...

W e thank Wong et al. (1) for their interest in our study (2) in which we showed that retinal vessels in diabetic patients with increasing stages of diabetic retinopathy experience a continuously decreasing response to flickering light. We believe that the issue raised by Wong et al. is very important. The study by Nguyen et al. (3) showed that arteriolar and venular calibers are structurally l...

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 ...

purpose : to evaluate the retinal nerve fiber layer (rnfl) and central corneal thickness (cct) in patients with exfoliation syndrome (xfs) methods : in this comparative case series we measures rnfl thickness and cct 30 patients with xfs and 30 age and sex matched healthy subjects who met the inclusion criteria. results : average rnfl in xfs group were significantly thinner than controls (94.36±...

Perioperative visual loss (POVL), a rare but devastating complication, has been reported after spine, cardiac, and head-neck surgeries.The various causes include ischemic optic neuropathy, central or branch retinal artery occlusion, and cortical blindness. The contributory factors described are microvascular diseases and intraoperative hemodynamic compromise. However, the exact association of t...

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...

BACKGROUND AND PURPOSE Central retinal artery occlusion results in acute visual loss with poor spontaneous recovery. Current standard therapies do not alter the natural history of disease. Several open-label clinical studies using continuous infusion of thrombolytic agents have suggested that local intraarterial fibrinolysis (LIF) is efficacious in the treatment of central retinal artery occlus...

Background and Purpose—Central retinal artery occlusion results in acute visual loss with poor spontaneous recovery. Current standard therapies do not alter the natural history of disease. Several open-label clinical studies using continuous infusion of thrombolytic agents have suggested that local intraarterial fibrinolysis (LIF) is efficacious in the treatment of central retinal artery occlus...

PURPOSE To describe a case where detection of blood flow in the central retinal artery and the central retinal vein was limited by an artifact evoked by the optic disc drusen. METHODS Case report. RESULTS During color Doppler sonography, examination of optic disc drusen may generate an artifact--the so-called twinkling artifact--which can simulate blood flow and make evaluation of the central...