Double vision is the perception of two images from a single object. The images may be displaced horizontally, vertically or diagonally. Double vision is a common symptom when strabismus develops in late childhood or adulthood. When the eyes are misaligned, each eye sees a separate image. Infants and young children subconsciously ignore the image from the affected eye, so signs and symptoms are either minimal or absent. Double vision can also result from cataract, tumors, and certain other eye diseases and conditions (Graves' Disease, Myasthenia Gravis).
Perception of two images from a single object; ghost images
Botulinum Toxin (Botox)