User blog comment:Xilinoc/Ch. 556 - The Wolfsbane/@comment-24107489-20131107050413/@comment-11051098-20131107151732

I suppose that's what he meant. But Tôsen stated that he could see first at the point when he had entered his Resurrección, so it appears his Hollowfication didn't give him sight, only more power and high-speed regeneration.