How close is too close?

Monitors should be a minimum of two feet from your eyes. Three is better. As somebody who leans into the monitor and gawks at the screen, this piece of advice is very hard to follow. But its all to save your vision and prevent eyestrain. If you cant read comfortably at that distance dont get closer to the monitor but enlarge the print. I have to remind myself of this and keep at it. Also, every hour at least take a five minute break from looking at the screen. All this will give you healthy bright eyes. Moms advice to eat orange veggies like carrots might also do the trick.