Try vitamin A, cod liver oil or other fish oils, and flax oil, olive oil, coconut oil. Drink lots of water. These things have helped me tremendously. Mine is bad in the winter, so I have to keep well hydrated and use a humidifier. Try to replenish your skin around the eyes with a natural oil such as apricot kernal oil. Also do some palming-- take your palms and cover the eyes for minutes. It gives energy to the eyes and put warm water compresses on your eyes.

valiegirl gave good long-term advice. I was having dry eyes for a while, the greatest relief came from putting a few drops of oil IN my eyes (as recommended here at curezone) at bedtime. Castor oil, coconut oil, and I didn't try it but I suppose olive oil would be fine.
For irritated eyes, a salt-water bath of warm water with some Sea Salt in a bowl, opening the eyes under the water and looking around for a few minutes is really wonderful.
Obviously you can't use the oil in the day if you wear contact lenses. But if you have dry eyes you probably shouldn't be wearing the contacts anyway.
Remember, one way to rehydrate the body in general is with salt, as in Dr. Batmangelidj's book, "Your Body's Many Cries for Water." So for every cup or two of pure water you drink, it is good to take a pinch of Sea Salt (You can lick it instead of mixing it in water).

Don't use the trash that is on the market unless its pure water. Dry eyes are a symptom of a dry body. More water all around, make sure its pure (that is a Science in itself)I have good fortune with putting pure water on a unipole magnet, bottle sitting on the north.) A quart for about 45 min, or for a quick splash, 2oz for 5min should be fine. Magnetized water in the eyes is great and will also help in opening up the blocked pours of your eyes. This will give some instant relief while you gear up the water drinking and as the pours open up, will allow the natural flow of eye fluid again. If your big on soda, coffee, beer, wine, cut it a bit and substiture with water. As for the water itself, the best is a Water Ionizer system but just make sure you take the flouride and especially the cholorine out because they both dry up a body. Hope this fast note helps...PT

I used to have dry eyes too. I figured it was part of my fibro. I drank energized water to cure the fibro and after a while I noticed that among other things my dry eye syndrome had gone away. I can't really say how long it took; It was a gradual thing and I didn't notice at the time. Anyway, the instructions are on http://www.energizedwater.info. Pat.