My father is in his eighties and has difficulty reading anything. This didn't work any better than reader glasses which he already has. There is some image distortion around the edges. The 2x magnification just isn't enough for him.
I wanted this to help me read a book with small print when my eyes got tired. The problem is it is unhandy to try to balance an 8 x10 magnifier and a book at the same time. So for my purpose it doesn't work very well.
I might recommend this. It has lines in it which I believe magnify the page. However they seem to make it difficult to see some type. Try it out before you buy it.