I'm sure its normal. I woke up once with the feeling that my eyes had been open and if its dark when we sleep who is there to see us in the small hours with our eyes open?
We have a dog in the family who regularly sleeps with his eyes open.
Retiring and living frugally in money from downsizing after years of stress




these are commonly called 'night frights' I used to suffer from them when a little one. It isn't unusual at al, they seem to grow out of it. Probably an over active imagination.