Ellenpoly - I have heard about the coloured lenses. I don't know anyone who has actually tried it.

One thing I learned that has helped my students who have a visual perception error is to cut down on the glare. Laminated materials produce a glare which causes the print to appear to move around on the page. I now only use plain paper, the less glare, the better.

Besides that, it takes 60 years for that plastic to break down in the environment. Good for the environment, good for my students!

d