hi jeff,
depending which type you want, the canoscan models made by canon are reasonably
priced, very slim and need no external power supply.
alternatively if you wanted the camera style the Ipevo models will work for you
and they have free software especially developed for visually impared people.
they have 3 models, a basic one that just works as a document scanner, the
other 2 will work as a document scanner as well as being a stand alone video
magnifier with the top model being rechargeable and can be connected to smart
phones for use on the go.
you can find them all on amazon.
pete.
