1/283. Bilateral posterior ischemic optic neuropathy after spinal surgery.PURPOSE: To report the association between bilateral posterior ischemic optic neuropathy and spinal surgery. METHOD: Case report. RESULTS: After prone-position spinal surgery of 8 hours' duration, a 68-year-old woman was completely blind in both eyes. Moderate periorbital edema and temporal conjunctival chemosis were present bilaterally. Ophthalmic examination disclosed normal-appearing optic nerve heads, except for bilateral nasal fullness related to bilateral optic nerve drusen, and no retinal edema. Immediate cerebral arteriography, magnetic resonance imaging, and electroretinography were normal. Visual-evoked response was not detectable, and 7 weeks later, severe bilateral optic nerve head pallor developed. CONCLUSIONS: Severe selective hypoperfusion of the retrobulbar optic nerves may occur after spinal surgery. Pressure to the periorbital region may be a contributing factor.- - - - - - - - - - ranking = 1keywords = nerve (Clic here for more details about this article) |
2/283. association of high-dose intravenous methylprednisolone with reversal of blindness from lightning in two patients.OBJECTIVE: To report possibly beneficial effects of treatment with high-dose corticosteroids given intravenously to two patients with loss of vision after lightning strikes. DESIGN: case reports. PARTICIPANTS: Two patients who suffered the effects of a lightning strike. INTERVENTION: High-dose intravenous methylprednisolone (NASCIS-2 Protocol). MAIN OUTCOME MEASURES: Vision recovery, pupil responses, and optic nerve appearance. RESULTS: One patient had unilateral ophthalmoscopically visible abnormality with light perception vision and a relative afferent defect in that eye; vision recovered to 20/25. The other patient had no light perception, nonreactive pupils, and normal fundus examinations in both eyes; vision recovered bilaterally to normal (20/20). CONCLUSIONS: High-dose intravenous corticosteroid treatment in these patients may have had a role in their visual recovery.- - - - - - - - - - ranking = 0.25keywords = nerve (Clic here for more details about this article) |
3/283. Numerous transorbital wooden foreign bodies in the sphenoid sinus.A very rare case of numerous transorbital wooden foreign bodies penetrating into the sphenoid sinus in a 47-year-old male is reported. His right eye was nonreactive to light, and the oculomotor, trochlear and abducens nerves were completely disturbed. Although a minor injury was observed on the inner side of the right eyebrow, the wound was not serious or infectious. Computed tomographic scanning of the orbit and parasinus revealed an isodense linear shadow to muscle and an irregular shadow of the lamina papyracea. However, the findings were difficult to discriminate from an optic canal fracture preoperatively. We detected foreign bodies penetrating the optic nerve rise, which were successfully removed in combination with an endoscopic transethmoidal and transorbital approach. Various and careful imaging examinations are recommended to diagnose and manage paraorbital trauma, when a penetrating wound of the face is observed.- - - - - - - - - - ranking = 0.5keywords = nerve (Clic here for more details about this article) |
4/283. Acute unilateral visual loss due to a single intranasal methamphetamine abuse.An otherwise healthy 35 year old male with insulin-dependent diabetes mellitus (IDDM) presented himself three days after a single intranasal methamphetamine abusus. Directly upon awakening the day after the recreational use of this drug, he discovered an acute and severe visual loss of his right eye. This unilateral loss of vision was permanent and eventually lead to a pale and atrophic optic nerve head. The characteristics of this visual loss, together with the aspect of the optic nerve head was very similar to the classical non-arteritic ischemic optic neuropathy (NAION). We suggest a direct ischemic episode to the short posterior ciliary arteries due to this single intranasal abuse of methamphetamine as the underlying pathogenesis of this acute and permanent visual loss.- - - - - - - - - - ranking = 0.5keywords = nerve (Clic here for more details about this article) |
5/283. blindness from bad bones.Progressive visual loss is the most common neurologic finding in osteopetrosis. Several mechanisms may explain this phenomenon, including compression of the optic nerves caused by bony overgrowth of the optic canals and retinal degeneration. We report a child with osteopetrosis and progressive visual loss, even though patent optic canals were demonstrated by computed tomography and digital holography. This patient's visual loss was caused by increased intracranial pressure secondary, to obstruction of cerebral venous outflow at the jugular foramen. This case points to the importance of a full evaluation of the skull base foramina in the diagnostic workup of visual loss in patients with osteopetrosis.- - - - - - - - - - ranking = 0.25keywords = nerve (Clic here for more details about this article) |
6/283. Combined central retinal artery and vein occlusion in a child with systemic non-Hodgkin's lymphoma.PURPOSE: To report on a case of systemic non-Hodgkin's lymphoma and unilateral combined central retinal artery and vein occlusion. METHOD: We examined a 14-year-old boy who experienced a sudden unilateral visual loss five months after the initial diagnosis of systemic non-Hodgkin's lymphoma. RESULT: Visual loss was due to combined central retinal artery and vein occlusion in association with tumoral optic nerve involvement. CONCLUSION: Although very rare systemic non-Hodgkin's lymphoma may present with central retinal artery and vein occlusion prior to overt central nervous system involvement.- - - - - - - - - - ranking = 0.25keywords = nerve (Clic here for more details about this article) |
7/283. Reversible neuropraxic visual loss induced by allergic aspergillus flavus sinomycosis.This work reports a patient with visual loss treated successfully with surgical removal of the aspergillus flavus sinomycosis. Vision was partially reversed within hours after surgery before starting planned corticosteroid therapy. The patient's visual acuity continued to improve steadily until it became equal to that of the other eye. The immediate gain in vision and continued improvement without corticosteroid therapy suggest a new hypothesis for visual loss induced by allergic sinonasal aspergillosis. Simple mechanical pressure alone of the aspergillus mass over the nerve can produce visual loss, and this loss is reversed by removing the mass without corticosteroid therapy.- - - - - - - - - - ranking = 0.25keywords = nerve (Clic here for more details about this article) |
8/283. Posterior optic nerve infarction after lower lid blepharoplasty.We describe a case of acute and total loss of vision after lower lid blepharoplasty. This major complication followed minor cosmetic surgery. magnetic resonance imaging (MRI) showed posterior segmental infarction of the optic nerve, a finding not previously demonstrated.- - - - - - - - - - ranking = 1.25keywords = nerve (Clic here for more details about this article) |
9/283. A bad eye and a sore lip.A 48-year-old woman developed painful visual loss in the left eye, meningismus, and painful oral ulcers. magnetic resonance imaging of the brain with gadolinium demonstrated enhancement of the left optic nerve. Lumbar puncture showed a lymphocytic pleocytosis, and a biopsy specimen of one of the oral ulcerations was consistent with Behcet's disease. epidemiologic factors and diagnostic criteria for Behcet's disease are discussed.- - - - - - - - - - ranking = 0.25keywords = nerve (Clic here for more details about this article) |
10/283. Sinus polyp-associated soft tissue lesion and unilateral blindness: complications of extraction in leukemic patient.A case of an inflammatory polyp-associated lesion extending through an extraction socket appearing as an intraoral nodular lesion and unilateral blindness secondary to leukemic optic nerve head infiltration is reported. The patient was a 28-year-old male whose his upper first molar had been extracted fifteen days previously. The lesion was an asymptomatic soft tissue mass, red in color and hot tender to palpation, involving the alveolar ridge in the maxillary molar area. Although this is apparently a rare occurrence, the nature of the lesion was suggested by the history, clinical appearance, and radiographic findings. Excision of the inflammatory lesion was followed by complete healing with closure of the lesion. Unfortunately, the blindness was irreversible. The patient is still under leukemia therapy. review of the literature did not yield any other such cases. The role of oral lesions as a diagnostic indicator and the importance of dental surgeons in the diagnosis of leukemic patients are discussed. It is concluded that proper precautions and meticulous early diagnosis are required in these patients and that dental practitioners should be aware of the diagnostic features and possibilities of oral complications associated with leukemia.- - - - - - - - - - ranking = 0.25keywords = nerve (Clic here for more details about this article) |
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