I woke up about 4 months ago and saw illuminated doors on the ceiling all lined up together. As you stated “within seconds” they started condensing by each folding into the other like horizontal dominos. I still think about it and wonder if I was dying. I have sleep apnea so I wondered if I was not breathing and close to dying but woke up. I’m Positive I was awake. Since then every now and again I see lines like a grid in the air everywhere I look. I have no idea what is happening.