This aspect of my business deals with perceptional problems that might occur in children or adults.  Using colored lenses or overlays helps the brain to calm down and make it easier for anyone with Irlen Syndrome to function.  We have also found that people with head trauma and migraines also benefit from this technology.  We have a self test which we are happy to e-mail to anyone who requests it or go to Irlen.com to find out more information.