Joseph G Chacko

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PURPOSE To compare the sensitivity and specificity of detection, and accuracy of localization, of small steel intraocular and episcleral foreign bodies, using conventional axial and helical computed tomographic scanning in an experimental model. METHODS Small steel foreign bodies ranging in size from 0.048 to 0.179 mm3 were placed in intraocular and(More)
Giant-cell arteritis (GCA) is a systemic autoimmune disease affecting primarily the elderly. Giant cell arteritis can cause sudden and potentially bilateral sequential vision loss in the elderly. Therefore, it is considered a medical emergency in ophthalmology and a significant cause of morbidity in an increasingly aging population. Ophthalmologists need to(More)
Direct traumatic optic neuropathy is a rare complication of endoscopic sinus surgery and can result in irreversible damage to the optic nerve. We report a case of direct traumatic optic neuropathy after transnasal endoscopic orbital decompression for Graves's disease in a patient who experienced near-complete recovery of vision. We discuss possible(More)
A 27-year-old pregnant woman reported progressive loss of vision. Brain MRI disclosed an intracranial mass compressing the optic nerves and chiasm with imaging features suggestive of meningioma. Because delivery was imminent, surgical removal was deferred. Within a few days after delivery, the patient noted improvement in vision. Subsequent(More)
Malaria is a mosquito-borne infectious disease caused by protists of the genus Plasmodium. Malaria is widespread in tropical regions around the equator, including much of sub-Saharan Africa, Asia, and the Americas, and uncommonly seen in the developed world. Although a variety of ocular manifestations have been linked to malaria, optic neuritis is rare. We(More)
Malignant optic nerve glioma of adulthood is a rare tumour that can mimic optic neuritis in its initial presentation. 2 At onset, unilateral decreased vision occurs in 70% of patients; however, a rapid progression to total blindness is usually seen within 3 months and death within 1 to 2 years. MRI often shows diffuse enhancement and, later, enlargement of(More)
Idiopathic intracranial hypertension (IIH) is a syndrome characterized by increased intracranial pressure (ICP), the absence of structural lesions on neuroimaging, and normal cerebrospinal fluid composition. Cerebral venous sinus thrombosis (CVST) is a common cause of increased ICP and can be differentiated from IIH with magnetic resonance venography. We(More)