Epilepsy and CRT/LCD screen flickerLocked
This is a topic that has plagued me for some time. I as well as many others see a flicker that often causes a seizure so for many the use of a computer is not an option. Some also see this flicker watching tube, plasma televisions, not sure about projection yet. Still studying on that. Though front projection use LCD, it is not the same when projected. Rear projection uses guns and seems the least problem.
Unfortunately cost is an issue as well for many of these people.
Higher refresh rate can help many, not all.
Change in resolution in both directions, claimed to have helped some.
Monitors, both CRT (cathode ray tube) and LCD (liquid crystal diode).
As the fall off in intensity (from monitor), is progressive, not linear, for a simple example if your distance from the monitor is one foot and the nominal intensity (logarithmic progression base -2), is 1/2x then if two feet away 1/4x, three feet 1/9x, four feet 1/16x, five feet 1/25x, six feet 1/36x.
So sit further from monitor.
A video card that really does refresh at frequency set at without working at it.
Monitors that support higher refresh rates with reasonable resolution though available, again cost.
Lower color contrasts. Remove white as the default background, gray helps.
Yet the flicker is still seen on all sizes, brands and types of monitors.
OS?s, 98,Millenium+server,NT server, ME, XP, Linux- seem to be the only ones being delt with at this time.
I sit six feet from a 29? monitor, have a very good video card lots of ram fast machine, and this is the best I have seen so far. Though this is not realistic for most.
Peripheral vision is more likely to catch the flicker for anyone. Looking off to the side of the monitor though paying attention to it still, many will see this flicker.