Horner’s syndrome is a medical condition that is considered rare and basically affects a person’s eye and face, specifically the person’s nervous system. It is considered as a syndrome for it includes several or a collection of symptoms. The condition is characterized by the sinking of one’s eyeballs into the orbital cavity and anisocoria (unequal size of pupils). Horner’s syndrome is also referred as Bernard-Horner syndrome and oculosympathetic palsy. The condition is named or coined after the person who first described the disease, Dr. Johann Friedrich Horner. Horner’s syndrome would then indicate for an underlying problem of the sympathetic nervous system. According to some statistical reports, the condition is commonly found in men than in women. The male-to-female ratio is 5:1 according to studies. This condition does not choose people specifically their age, but it has been found equally distributed in the general population of all age group.