You don't need to. Unless you are using an older computer monitor (mid-1990s or earlier), you do not need to be concerned about radiation. Today's flat screens are pre-shielded, emit light differently than older cathode ray tube (crt) monitors, and are no longer found to be a cause for concern. Although monitor filters are still available, there is no proof that they are of any benefit with modern screens.
Monitor Filters. Monitor filters - anti glare screen, anti-radiation and anti-static. See the additional info in the following website. Http://www. Ergoindemand. Com/hanging-mount. Htm.