Intent
The intent of this Success Criterion is to allow users to access the full content
of a site without inducing seizures due to photosensitivity.
Individuals who have photosensitive seizure disorders can have a seizure triggered
by content that flashes at certain frequencies for more than a few flashes. People
are even more sensitive to red flashing than to other colors, so a special test is
provided for saturated red flashing. These guidelines were originally based on guidelines
for
the broadcasting industry as adapted for desktop monitors, where content is viewed
from a closer distance (using a larger angle of vision).
Flashing can be caused by the display, the computer rendering the image or by the
content being rendered. The author has no control of the first two. They can be addressed
by the design and speed of the display and computer. The intent of this criterion
is to ensure that flicker that [...]