objective: to determine the sensivity and specifity of ocular ultrasonography in detecting vitreoretinal lesion prior to deep vitrectomy in patients with opaque media. method: the hospital records of patients undergoing deep vitrectomy in a defined period at shiraz khalili hospital were reviewed. sonographic reports given by a sonologist and operation reports given by a vitreoretinal fellowship...

approximately 20% of the incidence of cancers are caused by obesity. there have been several studies showing that weight loss, through calorie reduction and increased exercise, can potentially reduce the risk of cancer in obese people. but currently other special methods such as anti-obesity drugs or bariatric surgeries are used for intentional weight loss. whether such intentional weight loss ...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background: to investigate the reasons for p ostvitrectomy diabetic vitreous hemorrhage (pdvh), and to analyze the time of pdvh onset, the treatment of pdvh, the visual outcome of the treatment, and factors that affect visual acuity after treatment. materials and methods: overall, 292 eyes from 236 patients with proliferat...

chronic suppurative otitis media(C.S.O.M) in a chronic infective and chronic inflammatory process of middle ear and mastoid that may be with or without cholesteatoma.Due to its significant problems and complications such as hearing loss,labyrinthitis,facial nerve paralysis,meningitis,brain abscess,extra and subdural  BSCESS AND LATERAL SINUS THROMBOSIS IS A FATAL AND IMPORTANT DISEASE.IN THIS S...

MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression by post-transcriptional inhibition of mRNA translation. Dysregulation of miRNAs, including circulating miRNAs, has been reported to play an important role in the development of various diseases, including fibrotic diseases. Aberrant expression of miRNAs in the vitreous humor of vitreoretinal diseased eyes has been reporte...

The permeability of the blood-ocular barrier was investigated in five monkeys using vitreous fluorophotometry (VFP). Inward permeability (Pin) of the blood-retinal barrier was calculated by a computer simulation method. Kinetic VFP was performed after intravitreal injection of fluorescein (F) or fluorescein monoglucuronide (FG). The estimated mean value of Pin (x10(-6) cm/min) was 4.8 (SD 1.2)....

The eye is a well-suited organ for local delivery of therapeutics to treat vitreous inflammation as well as other pathologic conditions that induce visual loss. Several conditions are particularly challenging to treat and often require chronic courses of therapy. The use of implantable intravitreal devices for drug delivery is an emerging field in the treatment of vitreous inflammation as well ...

THE effect of hyaluronidase injections on the slit-lamp appearance and the composition of the vitreous humour of the rabbit has been examinfed. The purpose of the experiments has been to see whether disaggregation of hyaluronic acid from a viscous to a non-viscous form in the vitreous humour is a permanent change and whether any visible change persists as a result of hyaluronidase action. Very ...

In assessing a patient who has experienced an acute disturbance of vision in an uninflamed eye an accurate history is crucial, because it may be that a longstanding visual defect has only just been noticed by the patient. It is important to make this differentiation as this alters the range of diagnoses and the urgency of treatment. Acute visual disturbance ofunknown cause requires urgent refer...

PURPOSE Vascular endothelial growth factor (VEGF) concentrations in various regions of the vitreous were examined in patients with diabetic macular edema (DME) to explore the possibility of a concentration gradient in the vitreous. METHODS Vitreous samples were collected during vitrectomy from 71 eyes of 71 patients with DME and without posterior vitreous detachment who had not undergone panr...