Miller Fisher Syndrome is a rare autoimmune disorder that affects the nerves controlling movement and coordination. It is also known as Fisher Syndrome, MFS, and ophthalmoplegia-ataxia-areflexia syndrome (OAA). OAA syndrome describes the key features of the disorder, which include paralysis of eye muscles, lack of coordination and reflexes, and difficulty walking. Other synonyms for Miller Fisher Syndrome include acute ophthalmoparesis, acute ataxic neuropathy, and pharyngeal cervical brachial variant of Guillain-Barre syndrome. While Miller Fisher Syndrome is a rare condition, it is important to seek medical attention if experiencing symptoms such as difficulty moving, eye paralysis, and unsteady gait. Early diagnosis and treatment can help prevent long-term complications.