Uneven eyelids 6 months post upper blepharoplasty - do I need a revision? (Photos)

I had an upper blepharoplasty abroad back in January, and my eyelids are still uneven. One eyelid looks more “swollen” I think. I don’t know if it’s fluid buildup or what it is or what’s going on. Is there anything I can do to fix it? Do I need revision surgery?