2. The level of A-beta protein(i.e. not technically prion just yet) again the deposits in 7 of the 8 patients was so severe that if this were communicable easily with a high R0, it would also be seen in the general population by now.
So one does not need to worry at least about communicability of this through those means just yet. But transmission if postulated experimentally through certain means like say dental health can mean that we might be able to put a dent in a health crisis of a greying population.
Alzheimers is growing at epidemic proportions, globally .
Alzheimers in the US is growing at alarming rates .
Alzheimers in the US is growing at alarming rates
What I want to know is whether the probability of developing the disease given I am a X year old healthy male/female has increased.
It also doesn’t mean it’s not communicable or contagious, it means we don’t know because it seems no one have looked yet 
 It is important – imperative – to emphasize that transmissible does not equal contagious. There is absolutely no evidence that people with dementia can spread their disease casually to people around them.
 Since Alzheimer’s Disease is so common, and we have not (to my knowledge) been looking for Alzheimer's caused by surgical or other medical procedures that access eye or neural tissue -- particularly in patients for whom the appearance of Alzheimer’s would not be surprising -- is it possible that we are underestimating the transmission potential of this disease, and that such events are less rare than we would guess?
“It is important – imperative – to emphasize that transmissible does not equal contagious. There is absolutely no evidence that people with dementia can spread their disease casually to people around them. Even donated blood appears to be safe, as no association with blood transfusions and Alzheimer’s Disease has ever been detected.”
This isn’t especially surprising. It’s about on par with Alzheimer’s being caused by a microorganism. If we accept that this is true, then it follows that Alzheimer’s, as a symptom, can be transmitted. But unless there is a noteworthy vector of transmission, there’s nothing to worry about.
Speculation about eye care equipment sounds like sensationalism until tested.
If evidence of transmission between people comes forward, the sociological implications will mean decades of debate. Im not going to fault anyone for taking a keen interest in this area. They are opening a pandora's box.
That's a good point for those who just skip straight to the comments, but you should edit this to use the language of the article (contagious vs communicable)