I have gotten two or three emails from the shelter. Last night I replied saying basically what I had here..concerns about the dogs scaring the cat if he can't see, and the stairs being a problem.
This is the response I got...

Amy,

I recommend you talk to your vet about your concerns. They are well justified and he/she is probably your best resource to your questions.
All we know about Rex is that he has cataracts and his teeth need
cleaning and the vet thinks he's 10 yrs old. There could be other health issues that blood work will reveal but we don't intend to spend the money (est. $175) for that. If you are serious about adopting him, you should have the blood work done to evaluate his general condition as a senior aged cat.

Let me know what you decide after a little more thought.

Okay, I know this is a shelter and I'm sure they have limited resources, but I'm just not getting a warm fuzzy feeling from them. It is like, this is what we know, this is all we care to know...if someone wants him, good, if not, oh well. What do you guys think?