Imagery in Oedipus Rex
Sophocles uses language here that is evocative of fire imagery. The Greeks often described sight and the eyes as lights. By blinding himself, Oedipus has snuffed his light out, extinguishing the flame.
Note the heavy use of eye- and sight-related imagery in the play. Many characters claim to be able to “see” the truth while others have a more difficult time “seeing” it. Sophocles’ heavy-handed imagery foreshadows a crucial moment at the climax.