purpose: to determine the effect of intravitreal triamcinolone (ivt) injection on visual acuity in patients with ischemic central retinal occlusion (crvo). methods: this randomized clinical trial was performed on patients with ischemic crvo referred to the retina clinic at feiz hospital in 2007-2008. inclusion criteria were: duration of crvo less than one month, normal iop, no sign of diabetic ...

Background: Inherited retinal diseases (IRDs) are a group of genetic disorders with high degrees of clinical, genetic and allelic heterogeneity. IRDs generally show progressive retinal cell death resulting in gradual vision loss. IRDs constitute a broad spectrum of disorders including retinitis pigmentosa and Leber congenital amaurosis. In this study, we performed genotyping studies to identify...

Objective(s):The aim of this study was to evaluate distribution and changes of glycoconjugates of retinal photoreceptors during both pre- and postnatal development. Materials and Methods: Tissue sections from days 15 to 20 of Wistar rat embryos and 1 to 12 postnatal days of rat newborns including developing eye were prepared for lectinhistochemistry technique. Horseradish peroxidase (HRP)-label...

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...

eales' disease is an idiopathic obliterative retinal vasculopathy that is treated with laser photocoagulation, and/or vitrectomy. in order to determine visual outcomes and regression of retinal neovascularization following scattered peripheral retinal photocoagulation, and/or vitrectomy in cases with eales' disease, we did a retrospective study of the records of these patients treated...

introduction : frosted branch angiitis(fba) is a panuveitis with sheating of all retinal vesssels. case presentation : herein we report an immunocompetent person who presented with fever, headache, atypical rash, and hazy vision. ophthalmoscopy of both eyes revealed perivascular sheathing with frosted branch angiitis pattern in veins, patchy retinal hemorrhages. aqueous pcr analysis turned posi...

Introduction: We investigated correlation between the retinal nerve fiber layer (RNFL) thickness and the severity of Parkinson's disease (PD). Methods: In this study, the RNFL thickness of 23 patients with Parkinson’s disease (PD) was compared to normal controls (NCs). PD severity was assessed by the MDS-UPDRS (movement disorder society Unified Parkinson Disea...

introduction: there are different methods to repair retinal detachment. in this trial the retinopexy in repairmen of retinal regmatogenesis rd is compared with other methods in qazvin teaching hospitals during 1993-2003. methods: this out come study was conducted on 47 patients with s/b and retinal break cryopexy (group i) , 30 patients undergoing s/b with barrier laser photocoagulation around ...

distribution of retinal blood vessels (rbvs) in retinal images has an important role in the prevention, diagnosis, monitoring and treatment of diseases, such as diabetes, high blood pressure, or heart disease. therefore, detection of the exact location of rbvs is very important for ophthalmologists. one of the frequently used techniques for extraction of these vessels is region growing-based se...