Recently my left eye is very dry upon waking in the morning, to the point that I can feel it scratching against my eyelid if I move it around with my eyelid closed, due to the lack of lubrication. My eyes never have this problem during waking hours, quite the opposite, they tend to water heavily when exposed to the wind, especially in the cold.
There are no environmental changes that I have noticed, and even if there were I don't believe it would explain the dryness being in one eye rather than the other. Something to be concerned over, or one of those minor malfunctions that wear off/cause no major damage?