The world revolves around computers nowadays, which means more and more jobs involve sitting in front of a screen. We've already covered how this can be bad for your heart health, due to the amount of time you spend sitting down. However, it can also deal a surprising amount of damage to your eyes. While you're not likely to go fully blind from working at a computer, you might be surprised at how bad it is for your eyes. You might already be experiencing this in some way; it could be as si...