Set the Record Straight: CRTs vs. LCDs Better or Worse?: "LCDs constantly refresh their screens, just like CRTs. LCD pixels don't have infinite persistence so they have to be refreshed.

The eyestrain difference is caused by LCD cells having far more persistence than CRT phosphors. When you write a value to a LCD pixel, it stays that way for almost a second before it fades out, while CRTs will fade out in milliseconds.

LCDs generally use around 1/2 to 1/3 the energy of an equivalent CRT monitor.

CRTs emit VLF and ELF (Very Low Frequency and Extra Low Frequency) electromagnetic radiation (caused by the scanning electron beam in the CRT tube), while LCDs do NOT.

LCD displays are more visible even in slightly lower ambient lighting conditions"