Acute visual loss is a frightening experience, a common ophthalmic emergency, and a diagnostic challenge. In this review, the author focusses on the diagnosis of transient monocular blindness and visual loss due to infarction of the retina and/or the optic nerve-the ocular parallel of cerebral stroke.

Fibromuscular Dysplasia of the Extracranial Internal Carotid A rteries Associated With an Ulcerative Plaque • Fibromuscular dysplasia (FMD) of the extracranial internal carotid arteries is a relatively rare angiographical finding which has been reported as an incidental finding during angiography, as well as in association with a variety of different clinical conditions. A case is reported of t...

BACKGROUND Ticlopidine, an antiplatelet agent, when compared with aspirin has been found to reduce the risk of stroke in high-risk patients, ie, those with recent transient ischemic attack, reversible ischemic neurological deficit, amaurosis fugax, or minor stroke. Its cost-effectiveness in such use, however, is unknown. METHODS We developed a model of primary stroke prevention in which a hyp...

PURPOSE To examine the relationship between monocular and binocular visual acuities as predictors of visual disability in a population-based sample of individuals 65 years of age and older. METHODS Two thousand five hundred twenty community-dwelling residents of Salisbury, Maryland, between the ages of 65 and 84 years of age were recruited for the study. Corrected visual acuity was measured m...

The neural correlates of binocular rivalry have been actively debated in recent years, and are of considerable interest as they may shed light on mechanisms of conscious awareness. In a related phenomenon, monocular rivalry, a composite image is shown to both eyes. The subject experiences perceptual alternations in which the two stimulus components alternate in clarity or salience. The experien...

OBJECTIVE To investigate the incidence of venous thromboembolism (VTE) and cerebrovascular events in a community-based incidence cohort of patients with giant cell arteritis (GCA) compared to the general population. METHODS A population-based inception cohort of patients with incident GCA between January 1, 1950 and December 31, 2009 in Olmsted County, Minnesota and a cohort of non-GCA subjec...

Objective: This study aimed to evaluate the degree of agreement between cardiologists and radiologists for interpreting reporting carotid duplex ultrasound images. Methods: prospective observational was conducted in a cardiology outpatient clinic. For sample size calculation, according kappa (2 raters) hypothesis testing method, assuming minimum acceptable 0.6, expected 0.8, significance level ...

IntroductionHeadache is a very common complaint in doctors' offices, with primary causes being the majority relation to secondary ones. Despite this, identification of headaches relevant clinical practice, since these can be life-threatening condition, functionality or even reversible cause. However, imaging screening for all individuals headache costly and unrewarding. Therefore, it important ...