Lewis’s firm assertion that Till We Have Faces is not the least bit allegorical is challenged through its parallels in plot and theme with the highly allegorical Middle English Pearl. The deep allegorical structures in both revolve around seeing truly and falsely, and blindness both intentional and ignorant.
Miller, T. S.
"The Pearl Maiden's Psyche: The Middle English Pearl and the Allegorical-Visionary Impulse in Till We Have Faces,"
Mythlore: A Journal of J.R.R. Tolkien, C.S. Lewis, Charles Williams, and Mythopoeic Literature: Vol. 30
, Article 4.
Available at: http://dc.swosu.edu/mythlore/vol30/iss1/4