My doctor told me to make an effort to blink my eyes when using the computer all day. He also recommended Sustane.
It lubricates the eyes so you don't have to blink so often. It worked wonders for me. I also take breaks and close my eyes for a few minutes then look way off in the distance....then I go back to the computer or sewing. Much prefer sewing. Make sure you have good lighting so you are not straining to see.
Best wishes
D in TX