Helen Irlen discovered a visual perceptual distortion syndrome over 20 years ago. She has written two books on the subject, Reading by the Colors and The Irlen Revolution a Guide to Changing Your Perception and Your Life. Her website is www.irlen.com.
Denton Kurtz has been an Irlen Screener for over 20 years. He can find out whether you have the condition and then you can decide whether you want to continue to use the plastic overlays which are found to work for you or go to an Irlen Clinic to visit with an Irlen Diagnostician who will find the color or colors to go on lenses, which you can wear like glasses.