I have been onto this website a few times in the past and always found it helpful. My mother is in the late stages of alzheimers and up until recently I managed to get a smile from her now and again. The last couple of times I have visited her however she doesn't seem to be focusing and when I try to get her attention by sitting opposite and talking to her, it's like she doesn't see me. Her eyes look empty if you know what I mean. Is blindness one of the things that happens towards the end?