How risky is enophthalmos surgery to the optic nerve? How many people experience complications?

I was badly burned during an ipl session the blisters and scars have healed well but my eyes are sinking back into the socket. I have measurements documenting this. I know that there is surgery to correct enopathalmos but there are risks involved. Both my eyes have sunken in the left one more than the right. I want my eyes back the way they were. My questions are 1)what type of surgeon could help me with this? 2) how risky is the surgery to the optic nerve?