Francis Scott Key Fitzgerald著"The Great Gatsby"のchapter 2 で以下のような文があります。

But above the gray land and the spasms of bleak dust which drift endlessly over it, you perceive, after a moment, the eyes of Doctor T. J. Eckleburg. The eyes of Doctor T. J. Eckleburg are blue and gigantic—their retinas are one yard high. They look out of no face, but, instead, from a pair of enormous yellow spectacles which pass over a non-existent nose. Evidently some wild wag of an oculist set them there to fatten his prac­tice in the borough of Queens, and then sank down him­self into eternal blindness, or forgot them and moved away. But his eyes, dimmed a little by many paintless days under sun and rain, brood on over the solemn dumping ground.

これは何がいいたいのでしょうか。何かの比喩ですか？