I have a e-book facility on my
MP4 player :-D The type goes quite big, but then the page holds less. However the normal type is normal book size. I didn't think it would be easy to read from but it's brilliant! :)
I did look at the e-book, but it was quite heavy for what it was and the version I looked at, you had to pay quite a bit for the e-books. I put them on my MP4 player for free :-D
It may be wise to get your eyes tested anyway, they look for more than short/long sight these days, many diseases can be caught early with an eye test ;)