The faster the dot is scanned, the less flickering, and therefore there's a smaller amount of strain on your eyes. Stick with a refresh rate of 60Hz or more. Plasma monitors are a lot like CRT monitors without the bulkiness. Plasma monitors use a flat, lightweight surface filled with millions of tiny glass bubbles, each having a phosphor covering. These phosphors radiate in a certain pattern to create an image.
Plasma screens are also a lot like LCD screens in clarity and flicker-free viewing.
Although this fact is not really understood by most computer users, to some extent the quality of images on your monitor will only be as good as what your video card could handle. Speed is a crucial issue here. A video card becomes more sophisticated and expensive with various speed rates. Different video cards and the memory on them, also support various colors and resolutions. A high-end video card can support millions of colors and display superb resolution.