The sequence of hitting the tennis ball requires multiple different visual skills and a deficit in any of these skills results in reduced performance.
If your distance vision isn't good, you can't read what your opponent is doing, affecting your ability to anticipate.
You also see the ball later, which makes you slower to react and slower to prepare.
If your depth judgement is off, you can't predict where the ball is landing, which causes you to be out of position.
This often means you'll be too close or too far from the ball, which can cause a break down in the mechanics of your swing.
If your visual tracking is off, you'll lose the flight of the ball, which leads to late contacts.
And lack of visual stability means you can't keep your eyes still at contact, causing you to miss hit shots.
You can hire the best coaches and fitness trainers in the world.
But if your visual system isn't capable of playing at the next level. You won't ever be able to either.
The good news is that with training, you can quickly improve your vision which will automatically make you a better player.
It's kinda like speed in that sense. If you get faster, you'll automatically be a better player. You won't suddenly be Djokovic, but you're guaranteed to a lot better than you are now.
Vision is the same. Upgrade your vision and you will upgrade your game.
Because vision is one of the biggest limiting factors in performance, vision training isn't just the fastest way to improve your game, sometimes it's the only way!
Which is why I made a training program specifically for tennis players like you, who are serious about improving their game.