This is a three hour professional development seminar providing an introduction to Irlen® Syndrome. Participants will be taught the Pre-Assessment for Scotopic Sensitivity (P.A.S.S.) test and a discussion regarding diagnosis and remediation techniques for academic, private practice and work settings will be included. The P.A.S.S. test can be administered in less than 10 minutes and will verify if there is a need for further testing with a formal Irlen® Screening. P.A.S.S. testers do not work with Irlen® Spectral Overlays.