For years, Microsoft have lagged behind Apple in terms of accessibility features. However, with the rollout of Immersive Reader , Microsoft have introduced an excellent support for students with dyslexia and for those who need help with reading generally. Immersive Reader is a new feature in the Learning Tools add-on for for Word, OneNote, Outlook and Edge. It offers text to speech, text resizing, line focus, picture dictionary support and much more.
This is an example with the syllable feature turned on and the screen colour set to white on black.
The screenshot below is from OneNote (free) on the iPad. The Picture Dictionary setting has been activated. It is worth noting that OneNote has some other great features besides Immersive Reader, such as scanning and sharing documents