[Unknown Soldier]

Originally Posted by TinyRedLeaf

And oh, another point:
(3) How is it that Mei could see through her glass eye? It's an inorganic construct. How could it possibly be sending visual signals to her brain?

I've always thought that Mei sees through her right eye, and that the glass eye superimposes another layer to her vision, allowing her to identify the dying and the dead. But, in this episode, she clearly shows that she can actually "see" through the glass eye alone. Wut? How's that possible? Is this something voodoo I have to accept at face value, or just another mistake in the adaptation?

Spoilers for Kara no Kyoukai:

Spoiler:

Yukito Ayatsuji seems to be a fan of KnK, as Mei's Mystic Doll Eye of Death Perception bears a number of resemblances to Ryougi Shiki's Mystic Eyes of Death Perception. Mei and Shiki both suffered near-death experiences and returned with the ability to see beyond what normal people can see. The doll eye is not just a placeholder for an otherwise-empty socket, it is actually "mystical" and so grants her the ability to see the color of death in addition to being able to see normally through it. It's not clear if that ability is tied in a physical sense to the doll eye (nor does it matter at this point), for example, if she removed her doll eye and replaced it with another fake eye, does the ability to see the color of death remain within her and work through it or not. In the case of KnK, it's explicitly stated that Shiki's eyes are physically altered from her journey to death's door to give her the ability to see threads of origin, it is not something innate within her.