Alongside the dyslexia I also have Scotopic Sensitivity, or Irlens. Some people have this alongside their dyslexia, other can have it without having dyslexia. This was picked up a long time before my dyslexia.
Wearing tinted lenses - originally it was green, then blue and now purple they help to 'unscramble' the words on a page and makes it easier to focus on the text. I also have a colour filer on my laptop, iPad and phone which does the same thing.
"Irlen Syndrome (also referred to at times as Meares-Irlen Syndrome, Scotopic Sensitivity Syndrome, and Visual Stress) is a perceptual processing disorder. It is not an optical problem. It is a problem with the brain’s ability to process visual information."