1.Laptop produces more radiations than the desktop computers.
2.Try to use laptop on battery rather than direct supply.
3.Not to use laptop on your lap,its radiations are harmful to your reproductive organs.A pad for laptop may be useful to avoid radiations.
4.While using a desktop you can use a radiation filter.
5.Don’t sit too close to the screen and maintain a distance from power cables and cpu.
6.Have a high intake in food rich in vitamin A and C.these vitamins can help reduce the harmful effects of computer radiation.
7.keep watching and keep washing your face and you need to take regular break while working at your computer just go outside for while or look through a window for a while.