1.8 Do not cause the screen to flash at a frequency of above 2 Hertz

Avoid all flickering or flashing with a frequency of more than twice per second. This includes flashing backgrounds or text, repeatedly turning graphics on and off or cycling between different images.


Displays which flicker or flash can cause photosensitive epileptic seizures in susceptible individuals, particularly if the flash has a high intensity and is within the frequency range between 2 Hz and 60 Hz.

Directions and Techniques

There are no specific techniques recommended for this guideline.

How you could check for this:

There are no specific test methods recommended for this guideline.