A poetic image joins stars in a long night to the eyelashes of a sleepless observer. The astonishing construction makes the wakeful speaker's experience of the prolonged night vivid.
It is not a physical theory of stars and eyelids. Its purpose is to embody sleeplessness and the felt length of the night. Stars, darkness and eyelashes all contribute to that single rhetorical effect.
A merely strange arrangement without such a connection would not achieve the same merit. Imagination serves the intended meaning; oddness alone is not the criterion.