Thanks for the query..
What was the refractive error
she has ( power/number of glasses ).
What was the operation done for? Was it for a detachment of the retina
or just a laser
What is the vision in her operated eye now?
If the vision in her operated eye is very less the deviation of the eye (misplacement) could be because of very low vision
where the eye is not being used (because of low vision).
It can be corrected by a surgery but there are very high chances of its recurrence due to low vision...
If the above details are provided I can give you better information..
Will be available for further queries..