(Picture 1) Kimmo Huosionmaa Below this text is the article about the astronauts, who will live in the space forever. Those persons could have so dark cornea, that they would be almost blind. Those astronauts will operate in so bright light, that their retina will be destroyed if the eye faces straight solar light. There are two ways to make that thing. One is the surgical method, wherein the human eye would put the silicon- or plastic implant, what is turning dark in the bright light. That implant will be phototropic material, and they work like sunglasses, what will turn dark in the sunlight. Another way is to use the bio manipulated tissue, what will transpire pigmented in the straight solar light. When somebody would want to leave the identity of some person, this might happen by using artificial color blindness for that person. I know that feels brutal and very disturbing way to make the person, who has weakness what denies to track the genomes of that person. ...