https://www.reddit.com/r/blind/wiki/faq/sighted#wiki_q.3A_how_do_blind_people_use_computers.3F
> Some blind people are not totally without sight, and can read print just fine, if it's enlarged. Depending on how much vision they have, they may choose to use software like
$1 on Windows, or the magnification software built-in to OS X and Linux, to help them magnify the screen. They may also enable whatever high-contrast settings the OS they're using provides.
>
> People who are completely without vision, however, use screen-reading software. Many people with some vision also choose to use screen-readers instead of magnification as well, in order to prevent eye strain, to work faster, or for many other reasons. This software reads out the contents of the screen using synthetic speech. On Windows, this software may be
$1 a free and open-source screen-reader for the Windows platform. On mac, a screen reader is built-in to every OS X computer, all the user needs to do is press command f5 (or command + Power Button (where the touch ID sensor is) on a mac with a touchbar) to turn it on. Screen-readers like
$1 are available on Linux, as well.