نتایج جستجو برای: visual signs
تعداد نتایج: 455920 فیلتر نتایج به سال:
Background and purpose: Optic neuritis is one of the common causes of unilateral or bilateral visual loss. The most common cause of this disorder is demyelinating disease of the central nervous system (CNS) and most of the patients with optic neuritis will present other signs of multiple sclerosis (MS). The diagnosis depends on the clinical findings, however, magnetic resonance imaging (MRI) is...
Multiple sclerosis (MS) is one of the most common inflammatory neurological diseases which leads to a highly heterogeneous set symptoms and signs due differential involvement motor, sensory, visual, autonomic systems [...]
Vitals signs are measured at scheduled intervals by nurses in typical general wards. Vital signs may be measured more frequently if the patient condition deteriorates. In many units, the vital signs measurement frequency for some patients is different from the scheduled frequency due to various reasons such as staffing, patient acuity etc. In this article, we describe the actual measurement fre...
This paper describes a prototype of a digital video image analysis system that measures the relative luminance of highway signs using nighttime video images taken by a camera mounted in a moving vehicle. The concept is that by using an inexpensive video camera and laptop computer mounted in a vehicle a measurement of the brightness and visibility of the sign can be made. The system uses real ti...
People with impaired vision have trouble with day-to-day activities such as navigation and reading. Reading text on signs may be particularly difficult for the visually impaired because signs are typically in dynamic environments. Indoors, signage may include office, classroom, restroom, and fire evacuation signs. Outdoors, they may include street signs, bus numbers, and store signs. Depending ...
Mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome is a rare congenital disorder of mitochondrial DNA, presenting a wide range of clinical symptoms comprising headaches, seizures, aphasia, hearing loss, visual defects, and hemiparesis. Herein we report a case of a previously asymptomatic 40-year-old male who presented with recurrent headache, seiz...
BACKGROUND In posterior cortical atrophy (PCA), there is a progressive impairment of high-level visual functions and parietal damage, which might predict the occurrence of visual neglect. However, neglect may pass undetected if not assessed with specific tests, and might therefore be underestimated in PCA. In this prospective study, we aimed at establishing the side, the frequency and the sever...
purpose : visual loss associated with multiple traumas in the context of road traffic accident, especially when the maxillofacial and orbital areas are not directly injured, is an uncommon occurrence. the possibility of purtscher’s retinopathy, i.e. retinal manifestation of mechanical trauma elsewhere in the body, as the cause of visual disturbance in these situations can often be overlooked. p...
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