The Intuitive Colorimeter and Precision Tints have become a key instrument for optometrists who care for people with learning disabilities.
Our research shows, using a double masked randomised controlled trial, that PTL’s are effective at reducing the prevalence of headaches for some patients with migraine. Different people need different colours and the colour needs to be selected with a degree of precision. We found that the intuitive colorimeter and associated PTL’s work well for this purpose.
Professor Bruce Evans
Director of Research, Institute of Optometry