Dry eye is a chronic disease and does not have a permanent cure. Environmental influences and personal factors like having slept little and poor quality of sleep, stress and anxiety play a very important role in the symptoms of a patient with dry eye. If one day you sleep for 9 hours and that quality of sleep is good, you're relaxed and it's raining, then it's quite probable that you'll feel better than than on a winter's day with the heating on, hibernating in the house with anxiety and having slept for 3 hours. The patient must observe and identify the factors that worsen the signs, try to avoid them and increase how often they use artificial tears. For example, if one morning you wake up feeling bad and know that you slept little the night before, you should plan to have a nap to give the eyes time to rest and make up for the lost sleep the night before.