Doctor Eckleburg's eyes are mentioned repeatedly throughout Chapter 2. Symbolically, what might those eyes on that billboard represent?
The reader should pay close attention to the billboard because it's probably going to be significant later on.
Eyes symbolize the center of truth. What he sees with those eyes are meant to be understood as the ultimate truth.
Looks can be deceiving. When he looks at the billboard one should understand that as being misconstrued by others.
The eyes on the billboard are like the eyes of God, watching over the sinful acts of the people who live in the shadow of the sign.