Breathing and balance seem to the main issues to address.
Vision is probably a lost cause. My progressive multifocals blur the vision during motion, especially when tracking the ball in the vertical direction, which is the direction in which the refractive index changes. Add to that the effect of the glasses slipping during movement causing differential movement wrt the eye.
But at least breathing and balance can be addressed.
And also putting away shots when there is an opportunity instead of allowing the opponent to recover.