It occurs to me that windows are more than that however...
They're for looking in, and looking out.
And of course, that the soul looks out on the world through the eyes has all manner of familiar implications. (Oh be careful little eyes...) But that's not my point at present either.
You've heard that the preaching of the gospel "is to them that perish, foolishness..."* and that the invisible things of God are seen by some, missed by others?
It's this way-- the eyes inform the heart; the heart reforms the eyes.
The soul will love what the eyes seek. Until the eyes can only see what the soul loves.
*1 Cor 1:18