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Web Accessibility: Screen
Flicker
Quick Motion/Sudden Color Changes Cause Screen Flicker
Features, such as applets, plug-ins, scripts, and
animated images and movies, may cause this effect. People
with photosensitive epilepsy can have seizures triggered
by flickering or flashing in the 4 to 59 flashes per
second (Hertz) range with a peak sensitivity at 20
flashes per second. Quick changes from dark to light
(like strobe lights) can also trigger seizures.
[ From
WebAIM: User Control ]
Until hardware/software allow users to control
flickering, avoid causing the screen to flicker.
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