Eyelid asymmetry - do I need ptosis correct, blepharoplasty or filler to treat volume loss? (Photo)

Hi, I have noticed that my eyelids are asymmetrical and it is bothering me. I am not sure if this is ptosis in my left eye or is it just the difference in eyelid skin? I am 36. I just don’t know if I need ptosis correction, blepharoplasty or perhaps filler to treat volume loss in my right eye? I just want my eyes to look symmetrical again. Please, can you advise what specialist I should go to? What is causing the asymmetry in the first place? Thank you.