I have bone dry eyes. Not a lack of reflex (crying) tears, but a lack of lubricating tears.
They thing that the radial keratotomy that I had is the problem...apparently they are seeing a lot of it with post RK patients. They *think* that the nerve endings that communicate with the brain letting it know that the eye needs lubricating tears are cut off and the message isn't getting through.
Well, I hope this does the trick. I know others with ~similar~ complaints, and I think it only becomes more common as people get older.