We both watched this programme with great interest. A very good programme. However I feel that I must try and explain the difference and overlap between Dyslexia and Visual Stress.
So visual stress does exist and some people find that coloured overlays or tinted glasses make a huge difference for their ability to read. Most people who experience visual stress are also dyslexic and will need other interventions than just a coloured overlay. However some people with dyslexia do not experience any or very little visual stress. There are small percentage of people who have purely visual stress and a coloured overlay or tinted glasses will actually solve their difficulties. This is my opinion based on working with Sara for 7 years and having read 100’s of reports, as well as doing quite a lot of background research, especially when Sara worked for Chester University as a visiting lecturer.