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ciliary nerve damage: dilated pupil, poorly reactive but with normal near accommodation Adson's sign: Alfred Washington Adson: vascular surgery: thoracic outlet syndrome: obliteration of radial pulse with manoeuvres Alexander's law: Gustav Alexander: neurology, neurosurgery, ENT: vestibular lesions: describes nystagmus in vestibular lesions ...
The optic nerve can be damaged when exposed to direct or indirect injury. Direct optic nerve injuries are caused by trauma to the head or orbit that crosses normal tissue planes and disrupts the anatomy and function of the optic nerve; e.g., a bullet or forceps that physically injures the optic nerve.
Lhermitte's sign may also appear during or following high-dose chemotherapy. [7] [8] Irradiation of the cervical spine may also evoke it as an early delayed radiation injury, which occurs within 4 months of radiation therapy. [citation needed] Delayed onset Lhermitte's sign has been reported following head and/or neck trauma.
Peripheral mononeuropathy is a nerve related disease where a single nerve, that is used to transport messages from the brain to the peripheral body, is diseased or damaged. [1] Peripheral neuropathy is a general term that indicates any disorder of the peripheral nervous system . [ 2 ]
Neuromyelitis optica spectrum disorders (NMOSD) are a spectrum of autoimmune diseases characterized by acute inflammation of the optic nerve (optic neuritis, ON) and the spinal cord . [1] [2] [3] Episodes of ON and myelitis can be simultaneous or successive. A relapsing disease course is common, especially in untreated patients. [1] [4]
This loss results in hindbrain herniation and causes major compression of the upper cervical spinal cord. The quadriplegia dissipates once the patient lies supine. [59] An extremely rare complication of sCSFL is third nerve palsy, where the ability to move one's eyes becomes difficult and interrupted due to compression of the third cranial ...
The exact mechanism of optic nerve ischemia in these cases remains unclear, but contributing factors may include hypotension, anemia, hypoxia, and changes in the autoregulation of optic nerve arterial blood flow. The incidence of ischemic optic neuropathy leading to vision loss following general surgeries ranges between 0.1% and 0.002%.
Ischemic optic neuropathy (ION) is the loss of structure and function of a portion of the optic nerve due to obstruction of blood flow to the nerve (i.e. ischemia).Ischemic forms of optic neuropathy are typically classified as either anterior ischemic optic neuropathy or posterior ischemic optic neuropathy according to the part of the optic nerve that is affected.
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262 Neil Avenue # 430, Columbus, Ohio · Directions · (614) 221-7464