Is any screen or shield needed to limit radiation from computer screens to prevent eye degradation?

No: Computers do not cause vision problems. Some people find that staring at a computer screen for many hours a day contributes to a condition called dry eye. You may help avoid this by reminding yourself to blink every few seconds and by looking away from the screen every few minutes. See your doctor if you have eye problems.

No: No. No significant radiation is emitted from this source.