Not to be harsh or anything of the sort, but I was not a huge fan of this movie. I felt that the plot just crawled along. It was very slow and not interesting at all. The overall idea was great, I just wish the actors were better and the plot was a little more fast paced. An obvious point to talk about is the overall emphasis and recurrence of eyes.
In Blade Runner, the stress of the eyes shows the replicantís envy of human life and freedom. Their emotions are shown through their eyes that occasionally change color from time to time. The replicantís explain to humans that there is nothing worse than having an itch you can never scratch. They have no sense of feeling and only have memories to fall back on due to implants that were surgically put into their brains from other humans. They only live by memory, but have no logic of feeling and emotion.
The close examination of the eyes throughout the film allows for this strong visual to serve and create a dehumanized earth where specific human elements, eyes, are used to stand out and make a point of envy. The involuntary recurrence of the eyes is used to create an uncanny feeling of helplessness and fear for the audience. The uncanny feeling felt throughout the film is mainly contributed from the overall theme of the film where a machine, a replicant, tries to kill all humankind and take over the world. The use of the eyes is a factor that gives a stronger feeling of mystery and fear.