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The contributions of separate sympathetic and parasympathetic pathways to pupillary dilation during a sustained processing task were studied through environmental and pharmacological manipulations. In Experiment 1, 22 healthy volunteers (11 female) performed a serial Subtract 7 task while pupil diameter was recorded both during moderate room light and in(More)
A clinicoepidemiologic survey of Chagas' disease was conducted in the remote rural village of Tabacal in southcentral Cochabamba, Bolivia. In June and July 1988, we interviewed and examined 153 of 160 villagers > five years old for signs and symptoms of Chagas' disease. All participants had electrocardiograms (EKGs) and serologic analysis performed, and 20(More)
An 82-year-old woman presented with bilateral, symmetric posterior circulation infarctions secondary to giant cell arteritis (GCA). Her atypical clinical presentation included a lack of headache and fever, but she exhibited signs of systemic illness including generalized weakness, cachexia, apathy, and anemia. Laboratory testing revealed a markedly elevated(More)
A 53-year-old man presented with optic neuritis, followed within 10 weeks by a subacute progression of weakness, ataxia, and multiple cranial nerve palsies. Cranial magnetic resonance imaging demonstrated multiple T2-hyperintense lesions extending from the ponto-medullary junction to the thalamus and internal capsule. Cerebrospinal fluid analysis showed(More)
BACKGROUND giant cell arteritis (GCA) is a systemic vasculitis that may affect the optic nerve and cause blindness (e.g. ischemic optic neuropathy). Orbital inflammatory disease, however, is an uncommon presentation of GCA. PURPOSE to alert clinicians to the orbital presentations of GCA. PATIENTS AND METHODS a retrospective case series from tertiary(More)
OBJECTIVE Carotid-cavernous fistulae (CCFs) are abnormal communications between the carotid artery and cavernous sinus that may present with rapid visual deterioration and extraocular paresis as a result of increasing intraocular pressure requiring emergent treatment to preserve vision. We present a technique of balloon-assisted ethanol embolization of the(More)
PURPOSE To describe the pregnancy outcomes after the use of acetazolamide in pregnant patients with idiopathic intracranial hypertension (IIH). DESIGN Observational case series. METHODS setting: Two tertiary care academic neuro-ophthalmology units. patient population: Patients with IIH treated with acetazolamide. observation procedure: Documentation of(More)