Dark circles after rhinoplasty - 11 months post op. What do you suggest I do?

I am 11 months post op and I still have dark circles under my eye that won't go away. I am of middle eastern origin and my eye area has always been a bit darker than the rest of my face. My doctors advice is to apply arnica gel, which does not seem to help. What would you suggest I do? I cannot go outside without applying concealer and it bothers me very much. Thanks.