This is due to dryness due to decreased blink rate 1. Blink a lot 2. Cold compresses 3. Use lubricating eyedrop 4. Take proper rest

Blink often to refresh your eyes. Many people blink less than usual when working at a computer, which can contribute to dry eyes. Blinking produces tears that moisten and refresh your eyes. Try to make it a habit to blink more often when looking at a monitor. Take eye breaks. Throughout the day, give your eyes a break by looking away from your monitor..Check the lighting and reduce glare. Bright lighting and too much glare can strain your eyes and make it difficult to see objects on your monitor. The worst problems are generally from sources above or behind you, including fluorescent lighting and sunlight. Consider turning off some or all of the overhead lights. If you need light for writing or reading, use an adjustable desk lamp...Consult opthalmologist for further help they will do the needful.