The Life Behind the Eyes

When thinking about the role of eyes in Bladerunner, I'm guessing most people immediately think of the same saying that popped in to my head, "the eyes are the window to the soul". I think the role of eyes in this movie definitely stresses that, as Deckard is able to tell the difference between humans and replicants mostly through observing their eyes. Humans have real eyes, that are able to express feeling and emotion through the involuntary reactions such as dilation of the pupil. Although the replicants' eyes have been constructed and engineered to function and appear incredibly similar to the eyes of the humans, when they are put under very close scrutiny one can tell the difference, because behind the eyes of the replicant there is no soul. As similar as replicants may appear to humans, almost perfectly genetically designed to be inseparable, the one feature that is impossible to perfectly replicate is the eyes.