Blink Often
Your blink rate decreases when you are focused on a computer. Try to blink frequently while online. Follow the 20/20 rule by closing your eyes for 20 seconds each 20 minutes.
Setting your computer screen lower than eye level is another easy tip for keeping your eyes moist while using a computer. Because you won’t have to open your eyes as widely, the evaporation of tears between blinks might be slowed.