EMF and multiple frequencies simultaneously. Pulsed EMF affect cells which are in close proximity to the source of the pulsed field. The most likely theory is that, like metal fatigue, combinations of molecules experience sudden degradation after a certain time period. A sticky pad and velcro systems allows one to remove and install the mini-bulbs from one screen to another. The bulbs should be attached on the CRT frame, as close as possible to the screen, but not on the screen.
Many companies are worried and are actively seeking solutions.
However, increasing the distance one sits from the screen is not the solution because it causes either increased fatigue for the eyes or the need for larger screen. Larger screens in turn increase the problem because the range of harmful impacts is related to the length of the screen diagonal. Given the U.S. Consumer Protection Act, manufacturers are concerned but reluctant to take action pending establishment of government standards or more definitive evidence that CRTs impose health risks. Government radiation standards, however, are geared to Geiger counter-type measurements and electric, electromagnetic or electrostatic fields meters, not biological testing, and changes may be years away. In the absence of government standards, CRT manufacturers face confusing choices.