I discovered this somewhat by accident. I was having dry eyes during the night and in the morning. I read about using a warm wet washcloth on my eyes before bed for 15 minutes and a few times during the day. Not only did it feel good but my vision improved! What also improved are my sinuses and nasal dryness. Now I use it as I fall asleep. I will wake up in the night to use the bathroom and my vision is clear and nasal passages moist. I also use a vaporizer. Give it a try.