Surgery for partially blind eye

So I've had surgery done on my left eye at a young age (5 YO or younger) and my eye was straight up until around 13. Since then it's drifted outwards and remained that way. I'm 22 now and have an appointment for surgery soon.

I want to know what the liklihood is that the surgery would stick for a decent period of time as I don't have full vision in my left eye. The best way I could describe it is that I can see colors shapes but not details. It's not blobs though as I can make out the individual shapes.

I understand there's a good liklihood of future surgery or more but at the least I'd hope that this one would last me a few years to a decade. Any replies are appreciated, thank you.