Like all surgical procedures, eye muscle surgery does carry some risk; however, the most common risks are residual misalignment of the eyes and double vision. Despite our best efforts, careful measurements and use of adjustable sutures, occasionally, eye muscle surgery is only partially successful or a change in the alignment occurs after several years following a successful surgery. Additional surgery can be performed for residual misalignment or prism for a small deviation can be incorporated into glasses. Although most double vision that develops after strabismus surgery is temporary, persistent double vision is possible. Fortunately, the more serious risks of anesthesia complications, infection, retinal detachment and decreased vision are extremely rare.