These symptoms which are the results of the proximity to the computer screen are called Computer Vision Syndrome.
There are many ways to prevent the Computer Vision Syndrome and the first way depends on the way you work on computer. First of all let us take into account the use of laptops.
They certainly are very convenient to use because they can be kept anywhere; most of us keep them on our legs or in the front. The posture is the last thing on our minds. Following are some tips to use the laptop to avoid any eye strain:
The first thing that you need to do is to keep the laptop at a comfortable distance and set the screen at an angle so that you do not have to bend your neck. Ensure that the screen does not have any dust. Also ensure that the room or the place the laptop is being used at, does not have excess illumination as that will make you strain your eyes.
The ideal illumination is three times more than the screen illumination. Use a desk lamp in case the amount of light around is not sufficient. Use an external keyboard if you can so that the laptop screen is raised at the eye level to avoid any strain to the eye. Increase the font size on the computer for comfortable reading.
If you are someone who works regularly on the computer, then it becomes important that you take some time out and rest your eyes. Take a 10 minutes break every hour or a 20-minutes break every 2 hours and let your eyes just relax. Do not read anything and wash your eyes and then you can massage your eyes for a minute or two.
Always blink to ensure that the eyes are moist and in between work look out of the window into the sky or anything at least 20 feet away. Change your position and take time to stretch yourself leisurely in between to avoid fatigue to the body.