if you are having low vision
in operated eye and even after use of contact lens
and patching its not improving so at his age of 18 the vision will be same it will not improve much. For squint
part definitely we can do squint surgery for cosmetic purpose this correction will last for 4-5 years or longer and after sometime there is again chance of squint.
but for atleast 5-6 years you can have sqiunt free/less time