I often close my eyes while lucid dreaming in order to wake myself up. I will close my eyes and squeeze them shut for a few moments, and then when I open them again, I will often be awake in my room. I usually do this if the dream as turned into a nightmare. I have never really thought about what happens when I just casually shut my eyes in a lucid dream. However, I lucid dream every night, so I’ll give it a shot tonight.