Uneven eyelid crease 9 years after ptosis surgery - Am I a good surgical candidate? (photos)

Hello I’m 27 years old and when I was 18 I had a ptosis surgery on my left eye and I have notice than my eyelid’s crease on my left eye looks kind of uneven and it’s even worse when I get tired and, I’m not sure if I’m a good candidate for a surgery or what really cause it, I don’t use contacts I have astigmatism and myopia. I hope someone could help me.