Do you suffer from "computer vision syndrome?"

It's a condition that's been around since the early 90s, but with the increasingly popularity of BlackBerrys, Palm Pilots, and other hand-held devices, doctors fear that users could suffer headaches, neck aches, dry, irritated eyes, sensitivity to light and blurred or double vision from starting at the tiny screens.

"Computer vision syndrome" can cause serious vision problems. According to Jeffrey Anshel, an optometrist and consultant for companies like 3M, American Airlines and Starbucks, "The fact is, their eyes are so burned out at the end of the day, that they have pseudo myopia or transient-induced myopia due to tired, overstressed eyes."

The good news is that the more serious problems are temporary, and most of us are more-likely to suffer the less dangerous, but equally as irritating symptoms -- such as dry eyes, headaches, etc.

To combat these problems, try a few of the following tips: Every 20 minutes, take a 20-second break and focus on something 20 feet away; keep your PDAs and cellphones low, and set your monitor just below eye level; increase the font size and sharpen the image; and make sure your prescription is up to date.