Horner syndrome

Horner syndromeHorner syndrome (synonym Claude Bernard - Horner syndrome) is a narrowing of a pupil, a small narrowing of eye slits and a retraction of the eyeball. Horner syndrome occurs when the defeat of cervical sympathetic innervation eyes and Central sympathetic ways.
Horner syndrome occurs with injuries of the spinal cord at the level of the lower cervical vertebrae, while those of syringomyelia, various diseases of the brain stem, and at squeeze a lung tumor vermehrung nerve roots.