Brace yourself if you are squeamish One of the members of the Irish ME/CFS Association who is quite severely affected called and wants us to pass this on to our members. She said she was sent to A and E recently as she was getting flashing lights in her eyes. It turned out she was over-using her mobile phone for zoom videos and things like this and her eyes got overstrained. The aqueous solution at the back of the melted and turned to liquid and when that was moving around it caused the sensation of the flashing light. -- I know very little about eye physiology. I don't know whether what she describes is serious, nor how likely it is to happen to others. It's not something I recall reading about before.