Ping pongs originated in England at the end of the 19th century. It is said that there were two English tennis enthusiasts at that time. Once they had a tennis match outdoors. When it was hard to separate, it rained heavily, forcing the two energetic young people to hide in the school canteen. Then they put the dining room table together, separated by a few bricks, and hit it with tennis rackets. Onlookers found it interesting, followed suit and swept across Europe.
When playing ping pong, the eyes keep staring at the ball, follow the ball to a distance, back and forth, can effectively exercise the ciliary body movement and lens contraction, so that the eye muscle activity is large, eye blood supply is sufficient, vision is not easy to degenerate, is a good way to prevent visual decline.