Duane syndrome, also known as Duane retraction syndrome, is a rare eye movement disorder that affects the ability of the eyes to move in a coordinated way. The disorder is caused by a problem with the nerves that control the movement of the eye muscles. There are a few different synonyms that are sometimes used to describe Duane syndrome, such as Duane's syndrome, Duane's retraction syndrome, and Duane anomaly. While these terms all refer to the same condition, they are used interchangeably by medical professionals and patients alike, depending on the context in which they are being used. Regardless of the terminology used, Duane syndrome can cause significant vision problems and may require treatment to manage symptoms.