Editing Flicker (screen) (section)

==Health effects==
The flicker of a CRT monitor can cause various symptoms in those sensitive to it such as eye strain, headaches<ref>{{Cite web|last=Leosoft Ltd.|title=Eye Saver|url=http://www.eye-saver.net/|access-date=|website=www.eye-saver.net|language=en}}</ref> in migraine sufferers, and seizures in epileptics.<ref name=":0">{{Cite web |title=Monitor Flicker |url=https://imagescience.com.au/knowledge/monitor-flicker |access-date=2022-11-03 |website=Image Science |language=en}}</ref>

As the flicker is most clearly seen at the edge of our vision there is no obvious risk in using a CRT, but prolonged use can cause a sort of retinal shock where the flickering is seen even when looking away from the monitor. This can create a sort of [[motion sickness]], a discrepancy between the movement detected by the fluid in the inner ear and the motion we can see. Symptoms include [[dizziness]], [[fatigue (medical)|fatigue]], [[headaches]] and (sometimes extreme) [[nausea]].<ref name=":0" /> The symptoms usually disappear in less than a week without CRT use, and usually only last a few hours unless the exposure has been over a long period.