As with flash based web sites, rapidly changing images or highly regular patterns can trigger seizures in people with photosensitive epilepsy. Two sets of guidelines exist to help web designers produce content that is safe for people with photosensitive epilepsy:
The World Wide Web Consortium have produced Web Content Accessibility Guidelines. Version 1, produced in 1999, suggest designers allow users to control flickering or avoid causing the screen to flicker at all .
In the USA, websites provided by federal agencies are governed by section 508 of the Rehabilitation Act. This says that pages shall be designed to avoid causing the screen to flicker with a frequency greater than 2 Hz and less than 55 Hz
Subscribe to:
Post Comments (Atom)
0 comments:
Post a Comment