I, like my mother, have a condition with my eyes.
Sometimes, maybe once or twice a month, a small amount of one eyelid will dry out and stick to the surface of my eyeball when I'm asleep. When I wake up and open my eyes that part of my eyeball gets its top layer ripped off, very painful I'm sure you can imagine. My mother puts a sort of vaseline type gel on her eyes since she gets its several times a week, where I get it on much rarer occasions.
Just thought you might find that intresting.