User blog comment:Haki73/Zoros eye?/@comment-64.134.168.198-20101028075941

well silvers rayleigh an almost identical scar and he still has his eye, Shanks has a triple scar and still has his eye, and even jinbei has an eye scar and still has his eye. So i don't think zoro "lost" his eye. my suspicion is something to do with the hawk eyes thing mabye he has a "hawk eye" or maybe it's some form of training. Of course we won't know any thing for sure until oda confirms it or they reveal it in the comics. Also, keep in mind luffy's second gear shortens his life (granted it is unknown by how much) with each use(as stated by Rob Lucci) and then the ten year thing in impel down. So hes lost alot to reach the next level as well.