Accessible typefaces (eg Open Dyslexic)

Amelia.D.9093

Hi all,
I was wondering if there is a way for students to customise the way that text appears in Brightspace, apart from the font sizing? We have been informed that the web extensions like Open Dyslexic (and I think Bionic Reader) won't work with content in iframes, which is the majority of our content in Brightspace. Are there other ways to do this? Thanks so much!