'pupila?

Question

it says in a song:

Ella lo estaba soñando,
con la luz en su pupila

what is pupila? what does the last sentence say'

Answer 1

sorry but there is no way it means that.. it doent make sense with the song... i though of that but it means something else

Answer 2

ok... in her eye it does make a bit of sense... thanks!!!!

Answer 3

She was dreaming it with a gleam in her eye.

Answer 4

She was dreaming about it (or about him)
With the light in her pupil (the pupil of her eye)
Weird