To understand how strabismus surgery works, consider that each of your eyes has six outside (extraocular) muscles controlling eye movements.
If a muscle is too strong when you have strabismus, it may cause the eye to turn in, turn out or rotate too high or low.
On the other hand, an eye muscle weakness in certain cases may also cause misalignment. This condition may occur if you have a cranial nerve dysfunction affecting how eye muscles control movement.
Fortunately, your ophthalmologist has various surgical options to help correct these types of problems.
Strabismus Surgery Involving Recession And Resection Procedures
In a recession procedure, your eye surgeon detaches the affected outside muscle (extraocular muscle) from the eye and reattaches it (resection) farther back on the eye to weaken the relative strength of the muscle if it is too strong.
In contrast, if the muscle is too weak, your surgeon may use a recession procedure to reduce strength of the opposing muscle (antagonist) to achieve more balanced function of the eye muscles.
In certain cases, a resection procedure may be used to strengthen an eye muscle to correct misalignment associated with strabismus. If you have inwardly turned eyes (esotropia), the surgeon may strengthen the lateral rectus muscles — located on the side of each eye, toward the ear — by reattaching the muscle in a different location (resection). In this way, the lateral rectus muscles are relatively strengthened and they can turn the eyes farther outward. This results in better eye alignment.
Adjustable Suture Strabismus Surgery
With adjustable suture eye muscle surgery, your surgeon adjusts sutures holding eye muscles in place after a resection procedure, to attempt to improve your final outcome.