Humans are leaving earth in spaceships, the main character has an imperfect gene pool and was not selected to leave earth. He finds a handicapped man that has a perfect gene pool, but because he is paralyzed, he too is considered imperfect. The main character has a leg lengthening surgery and devises many ways to fool the system into thinking he is the handicapped man with "good" genes so he can have the man's seat on the rocket.
A couple of methods are: Scrubbing the skin to remove excess skin cells, and having fake fingertips filled with the handicapped mans blood so when officials do a "fingertip prick" blood test to check identity they think it's the handicapped man.
One part in the movie, there is a surprise checkpoint on the highway, the officials are checking eyes with a special light.the main character is forced to remove his contact lenses and discard them on the road to avoid detection… or something along those lines.
>>> Name of movie in which humans are leaving the Earth?