I have glasses I specifically use with a computer. I'm just curious of there is more like exercises, diet, food, vitamins etc.
There a bunch of things that can happen to your eyes, if you work on a pc then you are more susceptible to some.
Every hour you should look up from your screen and focus on object of varied distances from where you are sitting.
When you stare at a screen then your Ciliary muscles tend to lock at a point because your focus doesnt change much, looking at other objects gets them moving again.
Another symptom of prolonged pc use is that you dont blink as often which can cause drying out of the eyes. A good prescription lubricant helps quite a bit with that.
I use Optive lubricating drops every few hours on my pc and they do help quite a bit.