Strabismus surgery is necessary in cases where orthoptic treatment has obtained a symmetrical visual acuity in both eyes, but where an ocular deviation remains.

In this case the patient undergoes a surgical operation: children are always given a general anaesthetic while adults may have a general or local anaesthetic.
The eye muscles are shortened or repositioned away from their natural position in order to obtain ocular parallelism.

In some cases one single operation is enough to solve the problem, while in more complex cases several operations may be necessary at later dates.

It is important to remember that a surgical operation is an essential PHASE in the treatment of the patient, who must in any case continue oculistic and orthoptic MONITORING, in particular in the case of children in order to maintain and reinforce binocular balancing.