Ok, I can see that you worry a lot about your eye health. As a matter of fact, I have the same problem with you, and I just try to blink more consciously, and take more breaks from time to time so as to rest my eyes. Also, you have to get a better diet and get some vitamin pills on a regular basis. In the meantime, you should try to get rest properly so as to relax your eyes. Maybe eye drops could help with your problems.
This excessive eyes using will lead to this symptom. The decrease of blink times will cause lack of tear hyposecretion then the dry eyes and visual fatigue will be the result of your behavior of eyes using. This time you would better by using some artificial tears to relieve the dry eyes and have a good rest after that. Before the next time when you go to work, soften your computer screen's light, and lower the intense of contrast is necessary, which will ease your eyes. Help yourself to have a distant view every two hours for 10min. As your work will ask you use computer in a long time, which would not be easy to change, then you need to eat some supplement or fruits which full of Vitamin A & B, and carotene, protein. They are the necessary nutrients which would protect your eyes in your daily life. Carrot, Chrysanthemum tea, sesame, bean, milk and wheat germ are all the the best food of choice for you. At the meantime, eyes massage will bring more comfort to your eyes in a short time. Hope my suggestions are useful for you!
You need to drink more water, 8 glasses of water can keep your body run efficiently. Then Green tea can be helpful for your eyes.
Eat more food with vitamin A and D, such as carrot and orange. Take a break per hour. Then massage your eyes when they get tired.
If situation get serious, you should probably use artificial tears to relive your eyes.
If it's possible, grow some green plants on your desk.