How should an overlay be used?
The reader should place the sheet over the page, when reading. The text should be positioned to avoid reflections from the surface of the overlay caused by lighting. The overlay should not be creased, and it is a good idea to keep it in an envelope when it is not in use. Pupils should nevertheless feel free to touch the overlay in order to point when reading. If teasing is a problem, it may help for staff to explain to the class that the use of overlays to correct sight is similar to the use of glasses.