<unk>  can result from disorders of various parts of the eye and nervous system: * Infection around the eye. Ophthalmoplegia is an important finding in orbital cellulitis. * The orbit of the eye, including mechanical restrictions of eye movement, as in Graves' disease. * The muscle, as in progressive external ophthalmoplegia or Kearns–Sayre syndrome. * The neuromuscular junction, as in myasthenia gravis. * The relevant cranial nerves (specifically the oculomotor, trochlear, and abducens), as in cavernous sinus syndrome or raised intracranial pressure. * The brainstem nuclei of these nerves, as in certain patterns of brainstem stroke such as Foville's syndrome. * White matter tracts connecting these nuclei, as in internuclear ophthalmoplegia, an occasional finding in multiple sclerosis. * Dorsal midbrain structures, as in Parinaud's syndrome. * Certain parts of the cerebral cortex (including the frontal eye fields), as in stroke. * Toxic envenomation by mambas, taipans, and kraits. Thiamine deficiency can cause<unk>  in susceptible persons; this is part of the syndrome called Wernicke encephalopathy. The causal pathway by which this occurs is unknown. Intoxication with certain substances, such as phenytoin, can also cause<unk> .
Ophthalmoparesis
Photopsia
Pelopsia
Hemianopsia
Vagotonia
Locomotor ataxia
Facial weakness
Hemiparesis