According to the 2012 paper Extra-large letter spacing improves reading in dyslexia, some spacing adjustments could make reading easier for dyslexic people, namely
- Add 2.5pt to interletter space
- 3 spaces between words
- double interline spacing
I am looking for a way to set this document-wide. I have found some packages that provide environments to change each of these spacings independently, but it might be bit tedious to wrap everything in three environments, and I don't know how that would work with figure captions, section titles…