Blind True sight

[Thuphinlok]

So as the post title suggests, my question is this. How does the spell true sight interact with a blind character? Details (if it helps) the character will be a Druid going Runecaster. The basic idea is that he pimps out his Animal companion to protect him physically, and has multitudinous runes for spell-y defenses, plus whatever he has prepared. The true sight comes into play later on, when he buys 2 glass eyes (he wasn't using his anyway) and inscribes the rune for a permanent truesight on them. Would this work or does the spell require you to actually have vision in order to function?

[Mountain]

The True Seeing spell only augments your sight, so it wouldn't help if you couldn't see at all.

You would need a Remove Blindness/Deafness cast on you, which not only fixes magical blindness, but natural blindness too, as long as the eyes are still there.

You could just ask for a houserule if it's for flavor purposes though; maybe a custom spell/magic eyeball.