What can cure dry eye?

Control not cure. Anti-inflammatory meds like Restasis and Xiidra can be helpful as well as omega-3 supplements and hot masks. For more difficult cases, Lipiflow and meibomian gland probing work well to restore normal physiology. Generally speaking, it is difficult to cure dry eyes. We try to control the symptoms as best we can but if you stop the treatments, then the dry eye symptoms will likely come back. .
Dry eye treatment. Your description sounds like dry eye. Initial treatment is frequent artificial tears during the day, ointment at night, warm compresses a few times a day, and omega-3 fatty acid supplements. If no improvement, you should see an eye doctor for further evaluation.
Increase tears. Tears can be increased by adding artificial tears, slowing drainage by placing plugs in tear drainage ducts or by using medications to improve function of glands that produce tear components (restasis). Systemic medications should be reviewed and substituted if possible alot of the make dry eye worse. Most common are antihistamines, diuretics and beta blockers. Other meds also ask your dr.