?How come the wife didnt get blind?

Probably the same reason not everyone is affected by the flu, things like this are random and won't affect everyone.

There are just some people out there that are born immune to some illness no matter how deadly.

I don't want you to hold me
I want you to pray
This is bigger than us...

-White Lies

The film aims to the analogy of blindness as the passive-agressive living that torments this society; ambition, power, greed, lack of consciousness about the others and so on, the absence of productive leadership, complaints over options, justification of the poor moral quality. Even so, there are people, almost none, only one in this city, to our knowledge, who needlessly care about how things should be done, and get it done. That's the Doctor's wife's part.

Not. Important.

A typical Hollywood film would have had scientists in a tent, giving stats about the percentage that aren't affected, wanting to get a sample of their blood to determine what made them immune (not to mention all the science around what the heck caused it in the first place), lots of politics, more scary military scenarios, etc. etc.

This wasn't that kind of film.

Be sure to proof your posts to see if you any words out