Cerium Overlays are coloured sheets of robust transparent plastic, developed by CVT, which can be used for all reading tasks. The use of dyslexia overlays has been shown through research to enable an increase in reading fluency, efficiency and duration.
The same research also demonstrated that the colour selected will vary for each person. 12 different colours are available. The overlays are UK paper size A4 that approximates to 297 x 210 mm or 11.7 x 8.3 inches. A great resource for Dyslexia and visual impairments. Overlays can easily be cut in half to use with smaller pages. Coloured overlays in A4 size can be preferable to the smaller, reading rulers in a number of cases.
You can find out more about visual stress and dyslexia overlays by following this link to the Cerium website.