blindness and birdbox

I see some very close similarities between the book blindness and the movie Birdbox. In the movie birdbox for them to survive, they can't look at the outside world or obstruct their view just enough so they can barely see anything. But at the end of the movie, they found a refugee camp that was a school for the blind. They were the ones to mainly survive because of their disability. In the book, Blindness people are just randomly losing their eyesight, and no one knows why. But the Doctors wife seems to be the only one immune to what appears to be an airborne disease.