Originally Posted by bert501
I haven't picked up a "real" book in 3 or 4 months. So today I happened to try to read one and I can't see the darn thing!...
This may well be an indication that you need to see an optometrist. It quite possible that you simply need reading glasses.
As others have said, the adjustable text size on the Kindle can be a aid. It isn't, though, a replacement for getting proper correction lenses.