منابع مشابه
Clinical reasoning: a 36-year-old man with vertical diplopia.
Sashank Prasad, MD Nicholas J. Volpe, MD Madhura A. Tamhankar, MD SECTION 1 A 36-year-old man with Von Hippel-Lindau syndrome presented with binocular vertical diplopia following suboccipital craniotomy for resection of a cerebellar hemangioblastoma. His diplopia was worse in left gaze. He was effectively treated with a 6-diopter base-down prism in the right eye. With-out spontaneous improvemen...
متن کاملDelayed onset diplopia following head trauma.
A 78-year-old woman presented with proptosis and double vision for 2 weeks. One month prior, she had fallen and suffered a skull fracture with a nonsurgical epidural hematoma. Visual acuity was 20/20 bilaterally. Her right pupil was 2 mm and reactive, and her left pupil was 4 mm and fixed. She had ptosis, inability to adduct, and limited elevation of the left eye (Figure 1). A bruit was auscult...
متن کاملHead tilt during driving.
In order to distinguish between the use of visual and gravito-inertial force reference frames, the head tilt of drivers and passengers were measured as they went around corners at various speeds. The visual curvature of the corners were thus dissociated from the magnitude of the centripetal forces (0.30-0.77 g). Drivers' head tilts were highly correlated with the visually-available estimate of ...
متن کاملthe effect of lateral head tilt on astigmatic axis
purpose: controversy has recently risen about the presence of compensatory ocular countertorsion (coct) after head tilt. this study was performed to define the functional range of this phenomenon. methods: cycloplegic autorefraction was performed on 80 eyes with regular astigmatism 2d. objective autorefraction was performed in normal position, right and left head tilt positions of 5º, 10º, 15º,...
متن کاملRenin release during head-up tilt occurs independently of sympathetic nervous activity in tetraplegic man.
1. The role of the sympathetic nervous system in the release of renin during head-up tilt has been studied in five normal subjects and in four tetraplegic patients with cervical spinal-cord transection above the sympathetic outflow. Blood pressure, heart rate and concentrations of plasma noradrenaline, plasma adrenaline and plasma renin activity were measured during head-up tilt to 45 degrees b...
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ژورنال
عنوان ژورنال: Journal of the American College of Emergency Physicians Open
سال: 2020
ISSN: 2688-1152,2688-1152
DOI: 10.1002/emp2.12019