The eyes of Doctor T. J. Eckleburg on the billboard overlooking the Valley of Ashes represent many things at once: to Nick
they seem to symbolize the haunting waste of the past, which lingers on though it is irretrievably vanished, much like Dr. Eckleburg's medical practice. The eyes can also be linked to Gatsby
, whose own eyes, once described as "vacant," often stare out, blankly keeping "vigil" (a word Fitzgerald applies to both Dr. Eckleburg's eyes and Gatsby's) over Long Island sound and the green light. To George Wilson
, Dr. Eckleburg's eyes are the eyes of God, which he says see everything.