The causes of dry eyes various, the change of eyes surface, the inflammation of immunity, cell apoptosis of eyes, the change of hormone level, will all be the reason of it. As for the living habit causes, there are many of them, please find bellows, excessive eye using with computer, driving, reading etc. The decrease of blink times will cause lack of tear hyposecretion that lead to dry eyes and visual fatigue; the environment drying lead to the excessive evaporation of tears; hypotensor or partial of stabilizer will also affect the incretion of tears; aging, lack of sleep, mental stress, these physical reason will also lead to the decrease of tear's quality. You can check by yourself if some reason have happened in your daily life. Help yourself to have a distant view every two hours for 10min. If your work will ask you use computer in a long time, you need to eat some supplement or fruits which full of Vitamin A & B, and carotene. They are the necessary nutrients which would protect your eyes everyday. Carrot, Chrysanthemum tea, sesame, bean, milk and wheat germ are all the great choice for you. At the meantime, eyes massage will bring more comfort to your eyes.