Horner’s syndrome [Johann F. Horner, Swiss ophthalmologist, 1831–1886] , a neurological condition characterized by a constricted (miotic) pupil, ptosis, and facial anhidrosis, associated with a lesion in the spinal cord, with damage to a cervical nerve or any ascending part of the sympathetic outflow to the face/head. Signs are ipsilateral (same side) to the injury.
