Having 20/20 vision means that you should be able to see the ball well, but what if your opponent sees the ball before you? What if your opponent can follow the ball better than you? You’re immediately on the back foot and they have that all important edge.
Most people judge their vision by how clearly they see.
However, vision is much more complex; there are many processes contributing to vision, clarity of sight being just one.
We must also consider speed and accuracy of focus, depth perception, peripheral awareness, stability of eye dominance, how efficiently the 2 eyes work together as a team and much more.
Elite athletes understand the need to train and keep the body in peak fitness. With vision being the dominant sense in most sport, we must maximise all aspects of vision to maximise sporting performance.