There are two issues being discussed here: hijab and marriage of the blind women.

Whether it is obligatory in Islam to cover the whole face is debatable. There are people on either side of the discussion. As someone with next to no mastery over the subject, I would not venture into the discussion by siding with anyone. However, I do find it despicable, to say the least, that some people even some ignoramous women find it wrong when other women put on hijab. I mean get a life losers! If I am a woman, and I like a part of my body to be covered, whether it is my foot or my face, it is my own personal issue. Who the hell are you to tell me anything about it? You can go around exposing your privates and I wont say a word, but if I am happy covering myself, why should that give you any pain in the hind side?

In my personal opinion, I respect every human being for the very fact of being human and regardless of whether or not they cover themselves. It is the right of every human to dress the way they like, perhaps going nude in public would be a little bit of infringment on others' right, yet to a good extent it is a personal matter.

As to the marriage for blind women, I think human beings with any infirmities are still as humans and deserve the same respect and compassion if not more. If there are prisoners, who are willing to treat their wives with dignity, there is no harm in allowing them to marry the blind (since the prisoners too are human). Some people might object as to why not any other men and just a selected group. Well, the problem is that most people would not be willing to get married to a blind woman and thus finding out people who would be willing is really a good idea.