As far as i know, the mineral oil can actually help people with dry eyes to some extents. The dry eye is the common term of conjunctival xerosis. It's the eyes symptom of tear film's pathological change, thus the cornea and conjunctiva without normal moist and feel dry. It could be stemmed from inflammation and immune system abnormal as well as excessive eyes using, etc. Fiftly, mineral oil is hydrocarbons mainly containing carbon atom number. It contains many composited ingredients, which make it workable for the moisture function. Thus, using the mineral oil or some products which are made of mineral oil can keep the eye moist, help to protect the eye from infections, and decrease symptoms of dry eyes effectively.
In spite of the fact that dry eye is not very serious eye disease, it certainly need some treatments so that it will not go worse. Mineral oil is one type of home remedy for dry eye. Usually combined with lanolin, mineral oil can be used to offer more lubrication to your dry eyes. Of course you can also treat your dry eyes by some other treatments. You can drink more water so as to keep your body enough hydrated and you dry eyes would become better. If you have tear ducts, you should unblock them to get your eyes more natural lubricator. Just blink more which is good for lubricating your dry eyes. Artificial tears are likewise of help to your dry eyes.
I think the mineral oil can be the good choice for your dry eyes. Using the mineral oil is a good way to lubricate your eyes if you don't produce tear naturally. You can use a special kind of eye mineral oil to before you go to sleep. This will be work. However, you should talk to you eye doctor about the best way for your dry eyes. And there are many other causes for dry eyes, so you can try to adjust your living style or diet. This maybe take a long time, but it would be good in the long run.