I’ve noticed that when I’m lying in bed in the dark with eyes closed, a sharp unexpected sound (like the popping of a settling structure, not necessarily all th

I’ve noticed that when I’m lying in bed in the dark with eyes closed, a sharp unexpected sound (like the popping of a settling structure, not necessarily all that loud) will cause a flash of light across my visual field. I wonder if that is a side-effect of this kind of connection.