All About Horner's Syndrome Horner's syndrome, known as "oculosympathetic paresis" by people who don't have friends, is caused by an injury to the sympathetic nervous system, widely considered the most compassionate part of the nervous system. Sympathetic denervation classically results in ptosis (droop eyelid), miosis (constricted pupil), an anhidrosis (loss of perspiration). Horner's svndrome was described in 1855 by Ed Horner, a strange Neurologist who spent a decade studying a commune of people ostracized by English society because they didn't sweat on half of their face (disparagingly referred to as "The Half Sweats"). Through his tireless efforts, he was eventually accepted into Half Sweat society and discovered a syndrome that would forever make med - Dr. Glaucomflecken @DGlaucomflecken #Horners #Syndrome #Overview #Ophthalmology #Diagnosis #Neurology