Help! One of my eyes is smaller than the other. How can I treat this? (Photo)

I don’t know if my actual orbit shrunk or if it’s just the whole eyelid that’s swollen. I’ve been to multiple doctors who said nothing is wrong. But it does affect my vision especially at night. The top eyelid and the bottom are swollen all the time. When I take pictures it’s noticeable and when I go out in public it’s noticeable also. Both of my eyes have trouble focusing together because of it. It has completely changed the shape of my eyelide