Special Education Centre at the School of Education. While the occasional study has suggested there is inconclusive evidence for the efficacy of colored lenses specifically to address reading performance deficits, the broader literature base encompassing the efficacy of the treatment to address physical symptoms, migraines, attention challenges, depth perception, ocular movement, and light sensitivity, among a variety of populations, including those with autism, ADHD, brain injury, stroke, learning disabilities, and the general population, provides a strong foundation for future research on the topic. Treatment The College of Optometrists (UK) has specified guidelines for optometrists who use the colorimeter system. This system differs from the system of colour selection developed by Helen Irlen, and prescribed tints will vary from those obtained via other methods. A society for coloured lens prescribers has been established to provide a list of eye-care practitioners with expertise in the provision of coloured lenses for the treatment of visual stress. Irlen Method The Irlen Method uses colored overlays and individualized, precision tinted lenses in the form of glasses or contact lenses. The method is intended to correct visual processing problems; it is claimed the resultant retiming of visual signals in the brain improves symptoms associated with Irlen Syndrome. See also References Further reading Vision Dyslexia Syndromes Alternative diagnoses Alternative therapies for developmental and learning disabilities