For me what has helped is living on milk for eight years. I find when I eat solid food my eyes hurt. But when I live on cow milk, mostly nonfat, my eyes feel okay. So basically I live 90 or 100% on cow milk, mostly nonfat. For six years living on cow milk was sufficient to deal with my eye pain. Then about two years ago I found I was tired and I couldn't shake it. So I added going to daily Catholic Mass. And that has been sufficient, the combination of going to Mass and living on cow milk is enough to keep me reasonably healthy and my eyes feeling okay without drops. I can't exactly recommend living on milk because it hasn't been proven to be a safe diet by medical authorities. But it has worked wonderfully for me, and I don't think my body works too differently than other people's.
When suffers dry eyes, eye drops is the best and quickest way to release dry eyes. If you don't want to use it and want to help dry eyes in more naturally way, you can eat more food contains of Vitamin A such as salmon, sardines, or eggs. Eat them once a day will helps keep your eyes moist. Besides, you can also adopt the way that take 10,000 IU of vitamin A with 400 IU of vitamin D daily. But if you are pregnant, you need to check with your doctor before taking vitamin A.
Research suggests that omega-3 fatty acids can help dry eyes naturally. The omega-3 fatty acids is rich in oily fish, such as salmon and mackerel, flaxseed, and chia seeds, so you can try to get these food to eat. What's more, artificial tears are useful to treat dry eyes. You can get them from the drugstore or just ask the seller for eye drops to treat dry eyes. Drinking much water can also help relieve from dry eyes effectively. People with dry eyes should wear sunglasses when they go outdoors in case their dry eyes get even worse.