First time in 25 years!! It was awful. I didn’t know what was going on. I thought I was going blind!!!! Worst feeling ever. I’m so sorry for all of you that have to deal them all the time. I felt helpless. It lasted about 15 min and slowly moved up (if that makes sense) and off my vision. Spoke to my cousin who works at an eye dr office and she was the one who told me what it could be. I googled images and there it was…that weird rainbow looking curvy light blocking some parts of my vision. I even lost my peripheral vision for few minutes. Scary. I hope it never happens again!