Forum:Zoro's Eye

After the timeskip we see that Zoro's eye has been cut and that he no longer uses it. However, there is no mention at all about how it happened or how bad it is damaged. We know that he aspires to be the best swordman in the world, meaning that he will, one day, have to fight his mentor; Dracule Mihawk. But Mihawk, refused to fight Shanks earlier on due to the loss of an arm. So by this same logic Zoro's eye must be alright and he's is just holding back to improve his skills and to battle truly worth opponents. It can't be just a result of a training accident, Zoro is way too awesome for that. What do you think?