how can I get rid of darkness under eyes? Over a year post-op blepharoplasty

I had upper and lower blepharoplasty over a year ago to treat mild creases under my eyes and excess skin on my eyelids. I appear to have dark bruised like skin under my eyes, I’m particular under my right eye that I didn’t have before. How can I get rid of it? Is it safe to have another lower bleph? I already have rounded corners and lower eyelid retraction on my left eye. I have very large eyes and flat cheeks.