We have earlier reported about the wonders of using Ubuntu 6.06 Dapper. It's good and all that but those tiny fonts are going to take a toll in your eyesight. So to prevent future optometrist bills from sky-rocketing, here's what you can do to take advantage of Ubuntu and at the same time keeping your eyes healthy. Sayanchal, most likely an Ubuntu user, has shared some tips on how to take care of your eyesight.

The first thing you could do is login to your GNOME session and click on the System > Preferences > Font menu. Then under Font Rendering select Subpixel Smoothing, afterwards you should click on Details so you could set Smoothing to subpixel and Hinting to Full. After all that, get ready to jot down some numbers on your calculator since it's time to set the dreaded DPI, which if you get wrong will not only change the font size but will also change everything displayed on the screen.

Sayanchal gives a concrete example of how you can come up with your correct DPI for your laptop, he says, "on my Dell Inspiron 640M laptop, I have a 14.1 inch widescreen display running at 1440 x 900. Now, what is 14.1 inches? Its the length of the diagonal of the screen. Now, using good old pythagoras theorem it turn out to be worth sqrt(1440^2+900^2) or approx 1698 pixels. To get the DPI, divide this by 14.1 inches to get 120.1 DPI, round to the nearest integer to set the DPI of your screen at 120. You'll have to do the above calculations for your own laptop."

If in case Firefox still doesn't display the just-right text size, click on Edit then Preferences, after which select Content then click on the Advanced button to see the Fonts and Colors section. After all that, set Display Resolutions to System settings.