I bought a package that is supposed to teach you how to correct your eyes and stop needing glasses. Im nearsighted. Anything to not wear glasses right?
Anyway, The focusing you do in to view this is one of the exercises in the package.
Is it helpful? Dunno.
Didnt work for me because it also required that you stop using your glasses.
I can not drive and otherwise function properly without mine.
I am not medically qualified so could not comment. Suffice to say if you can focus on a screen within 2-3 feet you should be able to freeview ...