If you are using a computer with Microsoft Windows 10, 8, 7 Vista or XP then you can download a free piece of software called “Colorveil” to setup a virtual coloured overlay on screen for your child. They use this software in lessons where they use computers and also have instructions on how to use it in their planner. https://www.aurelitec.com/colorveil/windows/download/
Alternatively, if your child is using a chromebook follow the following steps:
1. At the bottom right, select the time.
2. Select Settings .
3. In the 'Device' section, select Displays.
4. Under 'Night Light', turn on Night Light.
5. Under 'Colour temperature', adjust the colour.