"Is that so... I see. You have my condolences. I understand well enough how it is to lose such an important part of your own body."

It's a little bit different, but... He is missing one of his own eyes as well, after all. That sort of thing made him have to readjust to many things in life, and especially battle. It's been years, and he likes to think he's adjusted to his depth perception (or lack thereof) but..

"Have you thought on adopting a different style of swordsmanship?"