Since getting my Irlen lenses things are so much different. Instead of trying to explain to people how everything was I made a video to show it as it can be easier for people to understand. What is Irlen Syndrome? 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. This problem tends to run in families and is not currently identified by other standardized educational or medical tests. For more information, symptoms and to take a self test look at irlen.com