How far away should your computer screen be from your eyes?

Adjust to comfort. Depends on font, screen height and size vs. Chair height and size, how much refractive error/correction. Go for an ergonomic setup.
18-24 inches. 18-24 inches between your eyes and your computer screen. You can find out more information about your vision and computers at: http://www.Apple.Com/about/ergonomics/vision.Html hope this helps!