> Using a sans serif font generally helps anyone with difficulty distinguishing letters so dyslexic, low vision, aging vision etc.

So far as I'm aware, there is very little actual evidence to support this oft-repeated claim. It all seems to lead back to this study of 46 individuals, the Results section of which smells of p-hacking.

https://dyslexiahelp.umich.edu/wp-content/uploads/2014/02/go...