Berries, I don't think anyone here believe all blind people are like this. I'm sure there are hundreds of familys out there with disabled parents who have a wonderful family life.
I feel the woman in this film is using her diability as an excuse to be plain lazy and her children are carrying the burden that will stay with them for the rest of their lives.
i also think she is selfish to carry on having kids when she cant cope with the ones she has!