background & importance: primary hemifacial spasm is usually caused by microvascular compression of the facial nerve at its root exit zone at brainstem without any space-occupying pathology. secondary or so-called symptomatic hemifacial spasm has an additional underlying pathology e.g. tumors leading to the microvascular compression. we review and discuss the pathophysiology and the literature ...

abstract in the present article, effective parameters of the buoyant jets have been evaluated in the stagnant ambient fluid. the jet parameters, geometry parameters and environmental parameters are investigated. using dimensional analysis, a set of dimensionless functions was obtained. to achieve the exact functions, a physical model was built in the hydraulic laboratory of shahid chamran unive...

purpose : to investigate the association of primary open angle glaucoma (poag) and systemic hypertension in patients referred to farabi eye hospital methods : in this case-control study in farabi eye hospital. one hundred patients were selected randomly from poag patients of glaucoma clinic, farabi eye hospital. control group consists of 100 patients, candidates for cataract surgery. history of...

objective: attempts to treat class ii malocclusions without extraction in non-compliant patients have led to utilization of intraoral molar distalizing appliances. the purpose of this study was to investigate dental and skeletal effects of bonded molar distalizer (bmd) which is a simple molar distalizing appliance. materials and methods: sixteen patients (12 girls, four boys) with bilateral hal...

during the last decades a new class of materials named fiber/metal laminates (fmls) was introduced. it is a hybrid composite consisting of alternating thin layers of metal sheets and fiber-reinforced composite material. fmls have both low weight and good mechanical properties. in this study, the impact behavior of this attractive material is investigated. the effect of fiber angle, stacking seq...

glaucoma is a major cause of blindness worldwide. a single nucleotide polymorphism of the mthfr gene (c677t) has been associated with susceptibility to this disease, although this is controversial in the last decade. in this study, the possible association between the mthfr c677t polymorphism and the risk of developing primary open angle (poag) and pseudoexfoliation glaucoma (pexg) was investig...

Aim: To determine (i) the prevalence of glaucoma in people aged >50 years, (ii) the proportions of different types of glaucoma, (iii) the distributions of intraocular pressure and vertical cup disc ratio. Method: Population based prevalence survey in rural West Bengal. People aged >50 years in randomly selected villages in 24 Parganas South district. The main outcome measures were diagnosis of ...

PURPOSE To document the diurnal intraocular pressure (IOP) profile with rebound tonometry performed by primary glaucoma patients in non-clinic environment. PATIENTS AND METHODS Fifty-three medically-treated eyes of 31 primary angle closure glaucoma (PACG) and 22 primary open angle glaucoma (POAG) patients with no previous eye surgery were recruited. Diurnal IOP was measured 5 times per day at...

Introduction: Nowadays,  considerable developments  in  the field  of  radiotherapy have  been  achieved.  They  include  the  advances  made  in  the  equipments  and  treatment  planning  techniques  which  require  highly complex calculations. Such achievements have made it possible to treat cancer patients not only  with  higher  radiation  dose  but  also  with  higher  precision  and  con...