Dry Eyes Support Group
Dry eyes is an eye disease caused by decreased tear production or increased tear film evaporation. Symptoms include burning and a sandy-gritty eye irritation that gets worse as the day goes on. The symptoms are often caused by a loss of water from the tears that results in tears that are too "salty" or hypertonic.
As far as feeling squeamish about using a petroleum jelly type nighttime ointment, I'm using Systane nighttime gel. It's just a little less icky and supposedly as effective.