Creating accessible materials ensures they can be read by a variety of users, including people who use assistive technology, such as screen readers, screen magnification and text-to-speech software. They are also are easier to access on a variety of newer devices, including smartphones, e-readers, iPads and other mobile devices, because the text “reflows” to fit the screen.
Accessible Information Exchange: Meeting on a Level Playing Field, US Department of Justice
How to Make Presentations Accessible to All
How to Create Accessible Power Points Presentations