Researchers from Universities of York and Glasgow found out that when staring at clockwise spinning spiral, vision will become better. I always thought those spiral illusion is to hypnotize people, but I still try it because I want to improve my eyesight. It seems like it does work.
Staring at this optical illusion improves your vision | Daily Mail Online
I turned off the music in the video, Incase there is subliminal or non neutral energy in the music
