2009-11-06 15:51:25 -

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Horner-Bernard or Horner's syndrome produces changes in the face and eye. Due to interruption of the sympathetic nervous system, there is a smaller pupil on the affected eye than on the normal eye. The lid of the affected eye tends to droop. Sweating is diminished on the affected side of the face.

Causes of Horner's Syndrome


Interruption of the sympathetic fibers either

centrally or peripherally causes Horner's syndrome. Centrally, the sympathetic fibers are interrupted between the hypothalamus and the upper portion of the thoracic spinal cord. Peripherally, they can be affected in the neck and along the course of the carotid artery and its branches to the eye.

Signs and Symptoms of Horner's Syndrome


The symptoms of Horner's syndrome include miosis, a small pupil in the affected eye. The eyelid sags due to weakness of Muller's muscle. There is less moisture and less sweating on the side of the face where the eye is affected. The eyeball appears to be sunken into the head. compared to the normal eye.

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