My eye doctor told me that computer screens don't damage your vision. Just that your eyes will get tired, and thus you need to rest them periodically by looking at distant objects. As for general safety of a CRT screen, well that's more complicated but they're still considered pretty safe. If it's a concern you should just get an LCD screen. They take up less space, are much lighter, use less energy and generate less heat. Here's some info about CRT screens
from Wikipedia:
Quote:
monitor and television manuals typically recommend a minimum viewing distance of 85cm (34in). The EM energy is also less intense for the display's user than for a person located behind it, because the deflection yoke is closer to the rear.
It is well-known that electromagnetic waves of sufficient energy can harm human cells (see ionizing radiation), but it is not currently well-established that the weaker radiation commonly emitted by electronic devices (including CRTs) has long-term health effects (see Electromagnetic radiation hazard and Bioelectromagnetics).
Ionizing radiation: CRTs emit a small amount of X-ray band radiation as a result of the electron beam's bombardment of the shadow mask/aperture grille and phosphors. Almost all of this radiation is blocked by the thick leaded glass in the screen, so the amount of radiation escaping the front of the monitor is widely considered harmless. The Food and Drug Administration regulations in 21 CFR 1020 are used to strictly limit, for instance, television receivers to 0.5 milliroentgens per hour (mR/h) (0.13 µC/(kg·h) or 36 pA/kg) at a distance of 5 cm from any external surface; most CRT emissions fall well below this limit.
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