PURPOSE To investigate the relationship between choroidal blood velocity (ChBVel), blood volume (ChBVol) and blood flow (ChBF) in the foveal region of the human ocular fundus and ocular perfusion pressure and to determine whether the choroidal circulation has some autoregulatory capacity. METHODS Measurements of ChBVel, ChBVol and ChBF were obtained by laser Doppler flowmetry in healthy subje...

into the healthy hemispheric field, vision improved or normalized. Finally, the possibility of changes in the modality-specific attention, a special type of attention that is not necessarily spatially distributed, was raised. Changes in this subtype of attention on lateral gazing may therefore help in overcoming visual field deficit as a compensatory mechanism. 5 We would like to comment upon t...

PURPOSE It has been hypothesized that the biosynthesis of O-linked glycans on proteins, particularly on the highly O-glycosylated mucins, by the corneal and conjunctival epithelium is necessary for the protection and maintenance of a healthy ocular surface. The initial step in O-glycosylation is the enzymatic addition of N-acetyl galactosamine (GalNAc) to serine and threonine residues by a larg...

lorazepam has in increasingly being used in our country in recent years. pharmacologically, lorazepam belongs to the benzodiazepines known for their wide neurotropic properties. there have been several studies on the side effects of the drug as stress disorders, tumors, preconvulsive activities in case of epileptic attacks, overdose, and behavioral problems, but little is known regarding the te...

purpose: to compare complications and motility of hydroxyapatite versus medpor ocular implants after enucleation at ahvaz imam hospital (from jan 2010 to jun 2011). methods: in a clinical trial, 50 patients scheduled for enucleation were randomly divided in two groups of 25 patients. group 1 underwent enucleation + hydroxyapatite (ha) and group 2 underwent enucleation + medor implant. all patie...

purpose: to introduce the importance and world prevalence of ocular leishmaniasis (ol), its clinical manifestations, and diagnostic and management features with more emphasis on iranian cases. methods: we reviewed all available articles published about ol during recent 50 years. results: ol is an ocular protozoal infection which is widespread in the world but is more common in developing countr...

Tear hyperosmolarity is thought to play a key role in the mechanism of dry eye, a common symptomatic condition accompanied by visual disturbance, tear film instability, inflammation and damage to the ocular surface. We have constructed a model for the mass and solute balance of the tears, with parameter estimation based on extensive data from the literature which permits the influence of tear e...