Who and why Blind Contact Lenses? A good question, but easily explained. Used mostly in the movie industry where a character has to be portrayed as blind or a soothsayer who sees beyond the realm of the living or into the past or future.
These characters have to have these lenses in place because of the high levels of technology that is used in the making of the movies today and with these high levels of technology comes a high level of expectations, of those who watch these movies, for accuracy of the characters who are being portrayed.
Also, the use of contacts, though uncomfortable for some actors or actresses, is much cheaper and easier to use than having to reproduce the scene using 3G effects to change the eyes to what is expected by the viewer of the movie.