I Was Lucid But Had No Visual Input. What To Do? Ld4All

Hi,Had a strange experience. Need advice.I'm using rem dreamer mask for a couple of weeks. No lucid dreams yet.The mask blinked when I was sleeping and I noticed it and found myself wondering if I'm asleep or not.Then I pressed the reality check button on the mask and saw the lights blink but didnt hear the beep. So I understood that I am dreaming.The thing is that I had no visual input. All I was seeing was black just like in regular sleep. I hanged in this situation for a while and didnt know what to do so I decided to wake up to check if the mask works.I woke up, pressed the button again and the beep did sound, so I understood that I was indeed lucid.What can I do in this situation when I know I'm dreaming but I dont see anything visually?Thanks,Nbd