The glasses are produced by a Japanese company that improves vision and reaction. It is used most of the time in sports stadiums.

They are called smart or strong glasses. They create the effect of slowing down the movement of the ball from reality, with the aim of helping goalkeepers improve their expectations and better tackle balls. The company says that wearing the glasses for 15 minutes every two or three days for a period of two or three months improves vision significantly, by up to 10%.