<unk>  results from disorders involving either the eye or the nervous system. Disorders of the eye include mechanical restrictions of eye movement as seen in Graves disease and abnormalities in the orbital muscle as seen in progressive external ophthalmoplegia. Neurological causes of<unk>  include neuromuscular junction disorders as in myasthenia gravis, involvement of relevant cranial nerves or their brainstem nuclei and abnormalities in the white matter tracts. Other causes of<unk>  are thiamine deficiency as part of the syndrome called wernicke encephalopathy and intoxication with certain substances such as phenytoin.
Ophthalmoparesis causes
Amaurosis fugax causes
Eye pain causes
Myopia pathophysiology
Hearing impairment causes
Glaucoma causes
Eye injury causes
Diplopia causes