It was just a glimpse of you, like looking through a window
Or a shallow sea
Could you see me?
And after all this time
It's like nothing else we used to know

from Arcade Fire – Afterlife Lyrics on Rap Genius

Meaning

Looking at something through glass or water can distort the image due to the refraction of light.

This links back to Reflektor, and its talk of prisms (which refract light) and illusions.

Win takes a look at his lost lover, but doesn’t properly recognise her- it’s like all the light from her has been refracted.

To help improve the meaning of these lyrics, visit “Afterlife” by Arcade Fire Lyrics and leave a comment on the lyrics box