User blog comment:Xilinoc/Ch. 574 DEATH IN VISION/@comment-3405923-20140326153450/@comment-8669536-20140326182358

Regarding the eyepatch, the way I see it there are 4 possibilities:

1. This Kenpachi's a figment of imagination

2. He went and picked the eyepatch up before the battle

3. He had a spare eyepatch with him

4. Kubo forgot about it